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vanitygen/oclengine.c

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/*
* Vanitygen, vanity bitcoin address generator
* Copyright (C) 2011 <samr7@cs.washington.edu>
*
* Vanitygen is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* any later version.
*
* Vanitygen is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with Vanitygen. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdio.h>
#include <string.h>
#include <math.h>
#include <assert.h>
#include <pthread.h>
#include <openssl/ec.h>
#include <openssl/bn.h>
#include <openssl/rand.h>
#include <openssl/evp.h>
#ifdef __APPLE__
#include <OpenCL/cl.h>
#ifndef CL_CALLBACK
#define CL_CALLBACK
#endif
#else
#include <CL/cl.h>
#endif
#include "oclengine.h"
#include "pattern.h"
#include "util.h"
#define MAX_SLOT 2
#define MAX_ARG 6
#define MAX_KERNEL 3
#define is_pow2(v) (!((v) & ((v)-1)))
#define round_up_pow2(x, a) (((x) + ((a)-1)) & ~((a)-1))
static void vg_ocl_free_args(vg_ocl_context_t *vocp);
/* OpenCL address searching mode */
struct _vg_ocl_context_s;
typedef int (*vg_ocl_init_t)(struct _vg_ocl_context_s *);
typedef int (*vg_ocl_check_t)(struct _vg_ocl_context_s *, int slot);
struct _vg_ocl_context_s {
vg_exec_context_t base;
cl_device_id voc_ocldid;
cl_context voc_oclctx;
cl_command_queue voc_oclcmdq;
cl_program voc_oclprog;
vg_ocl_init_t voc_init_func;
vg_ocl_init_t voc_rekey_func;
vg_ocl_check_t voc_check_func;
int voc_quirks;
int voc_nslots;
cl_kernel voc_oclkernel[MAX_SLOT][MAX_KERNEL];
cl_event voc_oclkrnwait[MAX_SLOT];
cl_mem voc_args[MAX_SLOT][MAX_ARG];
size_t voc_arg_size[MAX_SLOT][MAX_ARG];
int voc_pattern_rewrite;
int voc_pattern_alloc;
vg_ocl_check_t voc_verify_func[MAX_KERNEL];
pthread_t voc_ocl_thread;
pthread_mutex_t voc_lock;
pthread_cond_t voc_wait;
int voc_ocl_slot;
int voc_ocl_rows;
int voc_ocl_cols;
int voc_ocl_invsize;
int voc_halt;
int voc_dump_done;
};
/* Thread synchronization stubs */
void
vg_exec_downgrade_lock(vg_exec_context_t *vxcp)
{
}
int
vg_exec_upgrade_lock(vg_exec_context_t *vxcp)
{
return 0;
}
/*
* OpenCL debugging and support
*/
static const char *
vg_ocl_strerror(cl_int ret)
{
#define OCL_STATUS(st) case st: return #st;
switch (ret) {
OCL_STATUS(CL_SUCCESS);
OCL_STATUS(CL_DEVICE_NOT_FOUND);
OCL_STATUS(CL_DEVICE_NOT_AVAILABLE);
OCL_STATUS(CL_COMPILER_NOT_AVAILABLE);
OCL_STATUS(CL_MEM_OBJECT_ALLOCATION_FAILURE);
OCL_STATUS(CL_OUT_OF_RESOURCES);
OCL_STATUS(CL_OUT_OF_HOST_MEMORY);
OCL_STATUS(CL_PROFILING_INFO_NOT_AVAILABLE);
OCL_STATUS(CL_MEM_COPY_OVERLAP);
OCL_STATUS(CL_IMAGE_FORMAT_MISMATCH);
OCL_STATUS(CL_IMAGE_FORMAT_NOT_SUPPORTED);
OCL_STATUS(CL_BUILD_PROGRAM_FAILURE);
OCL_STATUS(CL_MAP_FAILURE);
#if defined(CL_MISALIGNED_SUB_BUFFER_OFFSET)
OCL_STATUS(CL_MISALIGNED_SUB_BUFFER_OFFSET);
#endif /* defined(CL_MISALIGNED_SUB_BUFFER_OFFSET) */
#if defined(CL_EXEC_STATUS_ERROR_FOR_EVENTS_IN_WAIT_LIST)
OCL_STATUS(CL_EXEC_STATUS_ERROR_FOR_EVENTS_IN_WAIT_LIST);
#endif /* defined(CL_EXEC_STATUS_ERROR_FOR_EVENTS_IN_WAIT_LIST) */
OCL_STATUS(CL_INVALID_VALUE);
OCL_STATUS(CL_INVALID_DEVICE_TYPE);
OCL_STATUS(CL_INVALID_PLATFORM);
OCL_STATUS(CL_INVALID_DEVICE);
OCL_STATUS(CL_INVALID_CONTEXT);
OCL_STATUS(CL_INVALID_QUEUE_PROPERTIES);
OCL_STATUS(CL_INVALID_COMMAND_QUEUE);
OCL_STATUS(CL_INVALID_HOST_PTR);
OCL_STATUS(CL_INVALID_MEM_OBJECT);
OCL_STATUS(CL_INVALID_IMAGE_FORMAT_DESCRIPTOR);
OCL_STATUS(CL_INVALID_IMAGE_SIZE);
OCL_STATUS(CL_INVALID_SAMPLER);
OCL_STATUS(CL_INVALID_BINARY);
OCL_STATUS(CL_INVALID_BUILD_OPTIONS);
OCL_STATUS(CL_INVALID_PROGRAM);
OCL_STATUS(CL_INVALID_PROGRAM_EXECUTABLE);
OCL_STATUS(CL_INVALID_KERNEL_NAME);
OCL_STATUS(CL_INVALID_KERNEL_DEFINITION);
OCL_STATUS(CL_INVALID_KERNEL);
OCL_STATUS(CL_INVALID_ARG_INDEX);
OCL_STATUS(CL_INVALID_ARG_VALUE);
OCL_STATUS(CL_INVALID_ARG_SIZE);
OCL_STATUS(CL_INVALID_KERNEL_ARGS);
OCL_STATUS(CL_INVALID_WORK_DIMENSION);
OCL_STATUS(CL_INVALID_WORK_GROUP_SIZE);
OCL_STATUS(CL_INVALID_WORK_ITEM_SIZE);
OCL_STATUS(CL_INVALID_GLOBAL_OFFSET);
OCL_STATUS(CL_INVALID_EVENT_WAIT_LIST);
OCL_STATUS(CL_INVALID_EVENT);
OCL_STATUS(CL_INVALID_OPERATION);
OCL_STATUS(CL_INVALID_GL_OBJECT);
OCL_STATUS(CL_INVALID_BUFFER_SIZE);
OCL_STATUS(CL_INVALID_MIP_LEVEL);
OCL_STATUS(CL_INVALID_GLOBAL_WORK_SIZE);
#if defined(CL_INVALID_PROPERTY)
OCL_STATUS(CL_INVALID_PROPERTY);
#endif /* defined(CL_INVALID_PROPERTY) */
#undef OCL_STATUS
default: {
static char tmp[64];
snprintf(tmp, sizeof(tmp), "Unknown code %d", ret);
return tmp;
}
}
}
/* Get device strings, using a static buffer -- caveat emptor */
static const char *
vg_ocl_platform_getstr(cl_platform_id pid, cl_platform_info param)
{
static char platform_str[1024];
cl_int ret;
size_t size_ret;
ret = clGetPlatformInfo(pid, param,
sizeof(platform_str), platform_str,
&size_ret);
if (ret != CL_SUCCESS) {
snprintf(platform_str, sizeof(platform_str),
"clGetPlatformInfo(%d): %s",
param, vg_ocl_strerror(ret));
}
return platform_str;
}
static cl_platform_id
vg_ocl_device_getplatform(cl_device_id did)
{
cl_int ret;
cl_platform_id val;
size_t size_ret;
ret = clGetDeviceInfo(did, CL_DEVICE_PLATFORM,
sizeof(val), &val, &size_ret);
if (ret != CL_SUCCESS) {
fprintf(stderr, "clGetDeviceInfo(CL_DEVICE_PLATFORM): %s",
vg_ocl_strerror(ret));
}
return val;
}
static cl_device_type
vg_ocl_device_gettype(cl_device_id did)
{
cl_int ret;
cl_device_type val;
size_t size_ret;
ret = clGetDeviceInfo(did, CL_DEVICE_TYPE,
sizeof(val), &val, &size_ret);
if (ret != CL_SUCCESS) {
fprintf(stderr, "clGetDeviceInfo(CL_DEVICE_TYPE): %s",
vg_ocl_strerror(ret));
}
return val;
}
static const char *
vg_ocl_device_getstr(cl_device_id did, cl_device_info param)
{
static char device_str[1024];
cl_int ret;
size_t size_ret;
ret = clGetDeviceInfo(did, param,
sizeof(device_str), device_str,
&size_ret);
if (ret != CL_SUCCESS) {
snprintf(device_str, sizeof(device_str),
"clGetDeviceInfo(%d): %s",
param, vg_ocl_strerror(ret));
}
return device_str;
}
static size_t
vg_ocl_device_getsizet(cl_device_id did, cl_device_info param)
{
cl_int ret;
size_t val;
size_t size_ret;
ret = clGetDeviceInfo(did, param, sizeof(val), &val, &size_ret);
if (ret != CL_SUCCESS) {
fprintf(stderr,
"clGetDeviceInfo(%d): %s", param, vg_ocl_strerror(ret));
}
return val;
}
static cl_ulong
vg_ocl_device_getulong(cl_device_id did, cl_device_info param)
{
cl_int ret;
cl_ulong val;
size_t size_ret;
ret = clGetDeviceInfo(did, param, sizeof(val), &val, &size_ret);
if (ret != CL_SUCCESS) {
fprintf(stderr,
"clGetDeviceInfo(%d): %s", param, vg_ocl_strerror(ret));
}
return val;
}
static cl_uint
vg_ocl_device_getuint(cl_device_id did, cl_device_info param)
{
cl_int ret;
cl_uint val;
size_t size_ret;
ret = clGetDeviceInfo(did, param, sizeof(val), &val, &size_ret);
if (ret != CL_SUCCESS) {
fprintf(stderr,
"clGetDeviceInfo(%d): %s", param, vg_ocl_strerror(ret));
}
return val;
}
void
vg_ocl_dump_info(vg_ocl_context_t *vocp)
{
cl_device_id did;
if (vocp->base.vxc_vc && (vocp->base.vxc_vc->vc_verbose < 1))
return;
if (vocp->voc_dump_done)
return;
did = vocp->voc_ocldid;
fprintf(stderr, "Device: %s\n",
vg_ocl_device_getstr(did, CL_DEVICE_NAME));
fprintf(stderr, "Vendor: %s (%04x)\n",
vg_ocl_device_getstr(did, CL_DEVICE_VENDOR),
vg_ocl_device_getuint(did, CL_DEVICE_VENDOR_ID));
fprintf(stderr, "Driver: %s\n",
vg_ocl_device_getstr(did, CL_DRIVER_VERSION));
fprintf(stderr, "Profile: %s\n",
vg_ocl_device_getstr(did, CL_DEVICE_PROFILE));
fprintf(stderr, "Version: %s\n",
vg_ocl_device_getstr(did, CL_DEVICE_VERSION));
fprintf(stderr, "Max compute units: %"PRSIZET"d\n",
vg_ocl_device_getsizet(did, CL_DEVICE_MAX_COMPUTE_UNITS));
fprintf(stderr, "Max workgroup size: %"PRSIZET"d\n",
vg_ocl_device_getsizet(did, CL_DEVICE_MAX_WORK_GROUP_SIZE));
fprintf(stderr, "Global memory: %ld\n",
vg_ocl_device_getulong(did, CL_DEVICE_GLOBAL_MEM_SIZE));
fprintf(stderr, "Max allocation: %ld\n",
vg_ocl_device_getulong(did, CL_DEVICE_MAX_MEM_ALLOC_SIZE));
vocp->voc_dump_done = 1;
}
void
vg_ocl_error(vg_ocl_context_t *vocp, int code, const char *desc)
{
const char *err = vg_ocl_strerror(code);
if (desc) {
fprintf(stderr, "%s: %s\n", desc, err);
} else {
fprintf(stderr, "%s\n", err);
}
if (vocp && vocp->voc_ocldid)
vg_ocl_dump_info(vocp);
}
static void
vg_ocl_buildlog(vg_ocl_context_t *vocp, cl_program prog)
{
size_t logbufsize, logsize;
char *log;
int off = 0;
cl_int ret;
ret = clGetProgramBuildInfo(prog,
vocp->voc_ocldid,
CL_PROGRAM_BUILD_LOG,
0, NULL,
&logbufsize);
if (ret != CL_SUCCESS) {
vg_ocl_error(NULL, ret, "clGetProgramBuildInfo");
return;
}
log = (char *) malloc(logbufsize);
if (!log) {
fprintf(stderr, "Could not allocate build log buffer\n");
return;
}
ret = clGetProgramBuildInfo(prog,
vocp->voc_ocldid,
CL_PROGRAM_BUILD_LOG,
logbufsize,
log,
&logsize);
if (ret != CL_SUCCESS) {
vg_ocl_error(NULL, ret, "clGetProgramBuildInfo");
} else {
/* Remove leading newlines and trailing newlines/whitespace */
log[logbufsize-1] = '\0';
for (off = logsize - 1; off >= 0; off--) {
if ((log[off] != '\r') &&
(log[off] != '\n') &&
(log[off] != ' ') &&
(log[off] != '\t') &&
(log[off] != '\0'))
break;
log[off] = '\0';
}
for (off = 0; off < logbufsize; off++) {
if ((log[off] != '\r') &&
(log[off] != '\n'))
break;
}
fprintf(stderr, "Build log:\n%s\n", &log[off]);
}
free(log);
}
/*
* OpenCL per-exec functions
*/
enum {
VG_OCL_DEEP_PREPROC_UNROLL = (1 << 0),
VG_OCL_PRAGMA_UNROLL = (1 << 1),
VG_OCL_EXPENSIVE_BRANCHES = (1 << 2),
VG_OCL_DEEP_VLIW = (1 << 3),
VG_OCL_AMD_BFI_INT = (1 << 4),
VG_OCL_NV_VERBOSE = (1 << 5),
VG_OCL_BROKEN = (1 << 6),
VG_OCL_NO_BINARIES = (1 << 7),
VG_OCL_OPTIMIZATIONS = (VG_OCL_DEEP_PREPROC_UNROLL |
VG_OCL_PRAGMA_UNROLL |
VG_OCL_EXPENSIVE_BRANCHES |
VG_OCL_DEEP_VLIW |
VG_OCL_AMD_BFI_INT),
};
static int
vg_ocl_get_quirks(vg_ocl_context_t *vocp)
{
uint32_t vend;
const char *dvn;
unsigned int quirks = 0;
quirks |= VG_OCL_DEEP_PREPROC_UNROLL;
vend = vg_ocl_device_getuint(vocp->voc_ocldid, CL_DEVICE_VENDOR_ID);
switch (vend) {
case 0x10de: /* NVIDIA */
/*
* NVIDIA's compiler seems to take a really really long
* time when using preprocessor unrolling, but works
* well with pragma unroll.
*/
quirks &= ~VG_OCL_DEEP_PREPROC_UNROLL;
quirks |= VG_OCL_PRAGMA_UNROLL;
quirks |= VG_OCL_NV_VERBOSE;
break;
case 0x1002: /* AMD/ATI */
/*
* AMD's compiler works best with preprocesor unrolling.
* Pragma unroll is unreliable with AMD's compiler and
* seems to crash based on whether the gods were smiling
* when Catalyst was last installed/upgraded.
*/
if (vg_ocl_device_gettype(vocp->voc_ocldid) &
CL_DEVICE_TYPE_GPU) {
quirks |= VG_OCL_EXPENSIVE_BRANCHES;
quirks |= VG_OCL_DEEP_VLIW;
dvn = vg_ocl_device_getstr(vocp->voc_ocldid,
CL_DEVICE_EXTENSIONS);
if (dvn && strstr(dvn, "cl_amd_media_ops"))
quirks |= VG_OCL_AMD_BFI_INT;
dvn = vg_ocl_device_getstr(vocp->voc_ocldid,
CL_DEVICE_NAME);
if (!strcmp(dvn, "ATI RV710")) {
quirks &= ~VG_OCL_OPTIMIZATIONS;
quirks |= VG_OCL_NO_BINARIES;
}
}
break;
default:
break;
}
return quirks;
}
static int
vg_ocl_create_kernel(vg_ocl_context_t *vocp, int knum, const char *func)
{
int i;
cl_kernel krn;
cl_int ret;
for (i = 0; i < MAX_SLOT; i++) {
krn = clCreateKernel(vocp->voc_oclprog, func, &ret);
if (!krn) {
fprintf(stderr, "clCreateKernel(%d): ", i);
vg_ocl_error(vocp, ret, NULL);
while (--i >= 0) {
clReleaseKernel(vocp->voc_oclkernel[i][knum]);
vocp->voc_oclkernel[i][knum] = NULL;
}
return 0;
}
vocp->voc_oclkernel[i][knum] = krn;
vocp->voc_oclkrnwait[i] = NULL;
}
return 1;
}
static void
vg_ocl_hash_program(vg_ocl_context_t *vocp, const char *opts,
const char *program, size_t size,
unsigned char *hash_out)
{
EVP_MD_CTX *mdctx;
cl_platform_id pid;
const char *str;
mdctx = EVP_MD_CTX_create();
EVP_DigestInit_ex(mdctx, EVP_md5(), NULL);
pid = vg_ocl_device_getplatform(vocp->voc_ocldid);
str = vg_ocl_platform_getstr(pid, CL_PLATFORM_NAME);
EVP_DigestUpdate(mdctx, str, strlen(str) + 1);
str = vg_ocl_platform_getstr(pid, CL_PLATFORM_VERSION);
EVP_DigestUpdate(mdctx, str, strlen(str) + 1);
str = vg_ocl_device_getstr(vocp->voc_ocldid, CL_DEVICE_NAME);
EVP_DigestUpdate(mdctx, str, strlen(str) + 1);
if (opts)
EVP_DigestUpdate(mdctx, opts, strlen(opts) + 1);
if (size)
EVP_DigestUpdate(mdctx, program, size);
EVP_DigestFinal_ex(mdctx, hash_out, NULL);
EVP_MD_CTX_destroy(mdctx);
}
typedef struct {
unsigned char e_ident[16];
uint16_t e_type;
uint16_t e_machine;
uint32_t e_version;
uint32_t e_entry;
uint32_t e_phoff;
uint32_t e_shoff;
uint32_t e_flags;
uint16_t e_ehsize;
uint16_t e_phentsize;
uint16_t e_phnum;
uint16_t e_shentsize;
uint16_t e_shnum;
uint16_t e_shstrndx;
} vg_elf32_header_t;
typedef struct {
uint32_t sh_name;
uint32_t sh_type;
uint32_t sh_flags;
uint32_t sh_addr;
uint32_t sh_offset;
uint32_t sh_size;
uint32_t sh_link;
uint32_t sh_info;
uint32_t sh_addralign;
uint32_t sh_entsize;
} vg_elf32_shdr_t;
static int
vg_ocl_amd_patch_inner(unsigned char *binary, size_t size)
{
vg_elf32_header_t *ehp;
vg_elf32_shdr_t *shp, *nshp;
uint32_t *instr;
size_t off;
int i, n, txt2idx, patched;
ehp = (vg_elf32_header_t *) binary;
if ((size < sizeof(*ehp)) ||
memcmp(ehp->e_ident, "\x7f" "ELF\1\1\1\x64", 8) ||
!ehp->e_shoff)
return 0;
off = ehp->e_shoff + (ehp->e_shstrndx * ehp->e_shentsize);
nshp = (vg_elf32_shdr_t *) (binary + off);
if ((off + sizeof(*nshp)) > size)
return 0;
shp = (vg_elf32_shdr_t *) (binary + ehp->e_shoff);
n = 0;
txt2idx = 0;
for (i = 0; i < ehp->e_shnum; i++) {
off = nshp->sh_offset + shp[i].sh_name;
if (((off + 6) >= size) ||
memcmp(binary + off, ".text", 6))
continue;
n++;
if (n == 2)
txt2idx = i;
}
if (n != 2)
return 0;
off = shp[txt2idx].sh_offset;
instr = (uint32_t *) (binary + off);
n = shp[txt2idx].sh_size / 4;
patched = 0;
for (i = 0; i < n; i += 2) {
if (((instr[i] & 0x02001000) == 0) &&
((instr[i+1] & 0x9003f000) == 0x0001a000)) {
instr[i+1] ^= (0x0001a000 ^ 0x0000c000);
patched++;
}
}
return patched;
}
static int
vg_ocl_amd_patch(vg_ocl_context_t *vocp, unsigned char *binary, size_t size)
{
vg_context_t *vcp = vocp->base.vxc_vc;
vg_elf32_header_t *ehp;
unsigned char *ptr;
size_t offset = 1;
int ninner = 0, nrun, npatched = 0;
ehp = (vg_elf32_header_t *) binary;
if ((size < sizeof(*ehp)) ||
memcmp(ehp->e_ident, "\x7f" "ELF\1\1\1\0", 8) ||
!ehp->e_shoff)
return 0;
offset = 1;
while (offset < (size - 8)) {
ptr = (unsigned char *) memchr(binary + offset,
0x7f,
size - offset);
if (!ptr)
return npatched;
offset = ptr - binary;
ehp = (vg_elf32_header_t *) ptr;
if (((size - offset) < sizeof(*ehp)) ||
memcmp(ehp->e_ident, "\x7f" "ELF\1\1\1\x64", 8) ||
!ehp->e_shoff) {
offset += 1;
continue;
}
ninner++;
nrun = vg_ocl_amd_patch_inner(ptr, size - offset);
npatched += nrun;
if (vcp->vc_verbose > 1)
fprintf(stderr, "AMD BFI_INT: patched %d instructions "
"in kernel %d\n",
nrun, ninner);
npatched++;
offset += 1;
}
return npatched;
}
static int
vg_ocl_load_program(vg_context_t *vcp, vg_ocl_context_t *vocp,
const char *filename, const char *opts)
{
FILE *kfp;
char *buf, *tbuf;
int len, fromsource = 0, patched = 0;
size_t sz, szr;
cl_program prog;
cl_int ret, sts;
unsigned char prog_hash[16];
char bin_name[64];
if (vcp->vc_verbose > 1)
fprintf(stderr,
"OpenCL compiler flags: %s\n", opts ? opts : "");
sz = 128 * 1024;
buf = (char *) malloc(sz);
if (!buf) {
fprintf(stderr, "Could not allocate program buffer\n");
return 0;
}
kfp = fopen(filename, "r");
if (!kfp) {
fprintf(stderr, "Error loading kernel file '%s': %s\n",
filename, strerror(errno));
free(buf);
return 0;
}
len = fread(buf, 1, sz, kfp);
fclose(kfp);
if (!len) {
fprintf(stderr, "Short read on CL kernel\n");
free(buf);
return 0;
}
vg_ocl_hash_program(vocp, opts, buf, len, prog_hash);
snprintf(bin_name, sizeof(bin_name),
"%02x%02x%02x%02x%02x%02x%02x%02x"
"%02x%02x%02x%02x%02x%02x%02x%02x.oclbin",
prog_hash[0], prog_hash[1], prog_hash[2], prog_hash[3],
prog_hash[4], prog_hash[5], prog_hash[6], prog_hash[7],
prog_hash[8], prog_hash[9], prog_hash[10], prog_hash[11],
prog_hash[12], prog_hash[13], prog_hash[14], prog_hash[15]);
if (vocp->voc_quirks & VG_OCL_NO_BINARIES) {
kfp = NULL;
if (vcp->vc_verbose > 1)
fprintf(stderr, "Binary OpenCL programs disabled\n");
} else {
kfp = fopen(bin_name, "rb");
}
if (!kfp) {
/* No binary available, create with source */
fromsource = 1;
sz = len;
prog = clCreateProgramWithSource(vocp->voc_oclctx,
1, (const char **) &buf, &sz,
&ret);
} else {
if (vcp->vc_verbose > 1)
fprintf(stderr, "Loading kernel binary %s\n", bin_name);
szr = 0;
while (!feof(kfp)) {
len = fread(buf + szr, 1, sz - szr, kfp);
if (!len) {
fprintf(stderr,
"Short read on CL kernel binary\n");
fclose(kfp);
free(buf);
return 0;
}
szr += len;
if (szr == sz) {
tbuf = (char *) realloc(buf, sz*2);
if (!tbuf) {
fprintf(stderr,
"Could not expand CL kernel "
"binary buffer\n");
fclose(kfp);
free(buf);
return 0;
}
buf = tbuf;
sz *= 2;
}
}
fclose(kfp);
rebuild:
prog = clCreateProgramWithBinary(vocp->voc_oclctx,
1, &vocp->voc_ocldid,
&szr,
(const unsigned char **) &buf,
&sts,
&ret);
}
free(buf);
if (!prog) {
vg_ocl_error(vocp, ret, "clCreateProgramWithSource");
return 0;
}
if (vcp->vc_verbose > 0) {
if (fromsource && !patched) {
fprintf(stderr,
"Compiling kernel, can take minutes...");
fflush(stderr);
}
}
ret = clBuildProgram(prog, 1, &vocp->voc_ocldid, opts, NULL, NULL);
if (ret != CL_SUCCESS) {
if ((vcp->vc_verbose > 0) && fromsource && !patched)
fprintf(stderr, "failure.\n");
vg_ocl_error(NULL, ret, "clBuildProgram");
} else if ((vcp->vc_verbose > 0) && fromsource && !patched) {
fprintf(stderr, "done!\n");
}
if ((ret != CL_SUCCESS) ||
((vcp->vc_verbose > 1) && fromsource && !patched)) {
vg_ocl_buildlog(vocp, prog);
}
if (ret != CL_SUCCESS) {
vg_ocl_dump_info(vocp);
clReleaseProgram(prog);
return 0;
}
if (fromsource && !(vocp->voc_quirks & VG_OCL_NO_BINARIES)) {
ret = clGetProgramInfo(prog,
CL_PROGRAM_BINARY_SIZES,
sizeof(szr), &szr,
&sz);
if (ret != CL_SUCCESS) {
vg_ocl_error(vocp, ret,
"WARNING: clGetProgramInfo(BINARY_SIZES)");
goto out;
}
if (sz == 0) {
fprintf(stderr,
"WARNING: zero-length CL kernel binary\n");
goto out;
}
buf = (char *) malloc(szr);
if (!buf) {
fprintf(stderr,
"WARNING: Could not allocate %"PRSIZET"d bytes "
"for CL binary\n",
szr);
goto out;
}
ret = clGetProgramInfo(prog,
CL_PROGRAM_BINARIES,
sizeof(buf), &buf,
&sz);
if (ret != CL_SUCCESS) {
vg_ocl_error(vocp, ret,
"WARNING: clGetProgramInfo(BINARIES)");
free(buf);
goto out;
}
if ((vocp->voc_quirks & VG_OCL_AMD_BFI_INT) && !patched) {
patched = vg_ocl_amd_patch(vocp,
(unsigned char *) buf, szr);
if (patched > 0) {
if (vcp->vc_verbose > 1)
fprintf(stderr,
"AMD BFI_INT patch complete\n");
clReleaseProgram(prog);
goto rebuild;
}
fprintf(stderr,
"WARNING: AMD BFI_INT patching failed\n");
if (patched < 0) {
/* Program was incompletely modified */
free(buf);
goto out;
}
}
kfp = fopen(bin_name, "wb");
if (!kfp) {
fprintf(stderr, "WARNING: "
"could not save CL kernel binary: %s\n",
strerror(errno));
} else {
sz = fwrite(buf, 1, szr, kfp);
fclose(kfp);
if (sz != szr) {
fprintf(stderr,
"WARNING: short write on CL kernel "
"binary file: expected "
"%"PRSIZET"d, got %"PRSIZET"d\n",
szr, sz);
unlink(bin_name);
}
}
free(buf);
}
out:
vocp->voc_oclprog = prog;
if (!vg_ocl_create_kernel(vocp, 0, "ec_add_grid") ||
!vg_ocl_create_kernel(vocp, 1, "heap_invert")) {
clReleaseProgram(vocp->voc_oclprog);
vocp->voc_oclprog = NULL;
return 0;
}
return 1;
}
static void CL_CALLBACK
vg_ocl_context_callback(const char *errinfo,
const void *private_info,
size_t cb,
void *user_data)
{
fprintf(stderr, "vg_ocl_context_callback error: %s\n", errinfo);
}
static int
vg_ocl_init(vg_context_t *vcp, vg_ocl_context_t *vocp, cl_device_id did,
int safe_mode)
{
cl_int ret;
char optbuf[128];
int end = 0;
memset(vocp, 0, sizeof(*vocp));
vg_exec_context_init(vcp, &vocp->base);
pthread_mutex_init(&vocp->voc_lock, NULL);
pthread_cond_init(&vocp->voc_wait, NULL);
vocp->voc_ocl_slot = -1;
vocp->voc_ocldid = did;
if (vcp->vc_verbose > 1)
vg_ocl_dump_info(vocp);
vocp->voc_quirks = vg_ocl_get_quirks(vocp);
if ((vocp->voc_quirks & VG_OCL_BROKEN) && (vcp->vc_verbose > 0)) {
char yesbuf[16];
printf("Type 'yes' to continue: ");
fflush(stdout);
if (!fgets(yesbuf, sizeof(yesbuf), stdin) ||
strncmp(yesbuf, "yes", 3))
exit(1);
}
vocp->voc_oclctx = clCreateContext(NULL,
1, &did,
vg_ocl_context_callback,
NULL,
&ret);
if (!vocp->voc_oclctx) {
vg_ocl_error(vocp, ret, "clCreateContext");
return 0;
}
vocp->voc_oclcmdq = clCreateCommandQueue(vocp->voc_oclctx,
vocp->voc_ocldid,
0, &ret);
if (!vocp->voc_oclcmdq) {
vg_ocl_error(vocp, ret, "clCreateCommandQueue");
return 0;
}
if (safe_mode)
vocp->voc_quirks &= ~VG_OCL_OPTIMIZATIONS;
end = 0;
optbuf[end] = '\0';
if (vocp->voc_quirks & VG_OCL_DEEP_PREPROC_UNROLL)
end += snprintf(optbuf + end, sizeof(optbuf) - end,
"-DDEEP_PREPROC_UNROLL ");
if (vocp->voc_quirks & VG_OCL_PRAGMA_UNROLL)
end += snprintf(optbuf + end, sizeof(optbuf) - end,
"-DPRAGMA_UNROLL ");
if (vocp->voc_quirks & VG_OCL_EXPENSIVE_BRANCHES)
end += snprintf(optbuf + end, sizeof(optbuf) - end,
"-DVERY_EXPENSIVE_BRANCHES ");
if (vocp->voc_quirks & VG_OCL_DEEP_VLIW)
end += snprintf(optbuf + end, sizeof(optbuf) - end,
"-DDEEP_VLIW ");
if (vocp->voc_quirks & VG_OCL_AMD_BFI_INT)
end += snprintf(optbuf + end, sizeof(optbuf) - end,
"-DAMD_BFI_INT ");
if (vocp->voc_quirks & VG_OCL_NV_VERBOSE)
end += snprintf(optbuf + end, sizeof(optbuf) - end,
"-cl-nv-verbose ");
if (!vg_ocl_load_program(vcp, vocp, "calc_addrs.cl", optbuf))
return 0;
return 1;
}
static void
vg_ocl_del(vg_ocl_context_t *vocp)
{
vg_ocl_free_args(vocp);
if (vocp->voc_oclprog) {
clReleaseProgram(vocp->voc_oclprog);
vocp->voc_oclprog = NULL;
}
if (vocp->voc_oclcmdq) {
clReleaseCommandQueue(vocp->voc_oclcmdq);
vocp->voc_oclcmdq = NULL;
}
if (vocp->voc_oclctx) {
clReleaseContext(vocp->voc_oclctx);
vocp->voc_oclctx = NULL;
}
pthread_cond_destroy(&vocp->voc_wait);
pthread_mutex_destroy(&vocp->voc_lock);
vg_exec_context_del(&vocp->base);
}
static int vg_ocl_arg_map[][8] = {
/* hashes_out / found */
{ 2, 0, -1 },
/* z_heap */
{ 0, 1, 1, 0, 2, 2, -1 },
/* point_tmp */
{ 0, 0, 2, 1, -1 },
/* row_in */
{ 0, 2, -1 },
/* col_in */
{ 0, 3, -1 },
/* target_table */
{ 2, 3, -1 },
};
static int
vg_ocl_kernel_arg_alloc(vg_ocl_context_t *vocp, int slot,
int arg, size_t size, int host)
{
cl_mem clbuf;
cl_int ret;
int i, j, knum, karg;
for (i = 0; i < MAX_SLOT; i++) {
if ((i != slot) && (slot >= 0))
continue;
if (vocp->voc_args[i][arg]) {
clReleaseMemObject(vocp->voc_args[i][arg]);
vocp->voc_args[i][arg] = NULL;
vocp->voc_arg_size[i][arg] = 0;
}
}
clbuf = clCreateBuffer(vocp->voc_oclctx,
CL_MEM_READ_WRITE |
(host ? CL_MEM_ALLOC_HOST_PTR : 0),
size,
NULL,
&ret);
if (!clbuf) {
fprintf(stderr, "clCreateBuffer(%d,%d): ", slot, arg);
vg_ocl_error(vocp, ret, NULL);
return 0;
}
for (i = 0; i < MAX_SLOT; i++) {
if ((i != slot) && (slot >= 0))
continue;
clRetainMemObject(clbuf);
vocp->voc_args[i][arg] = clbuf;
vocp->voc_arg_size[i][arg] = size;
for (j = 0; vg_ocl_arg_map[arg][j] >= 0; j += 2) {
knum = vg_ocl_arg_map[arg][j];
karg = vg_ocl_arg_map[arg][j+1];
ret = clSetKernelArg(vocp->voc_oclkernel[i][knum],
karg,
sizeof(clbuf),
&clbuf);
if (ret) {
fprintf(stderr,
"clSetKernelArg(%d,%d): ", knum, karg);
vg_ocl_error(vocp, ret, NULL);
return 0;
}
}
}
clReleaseMemObject(clbuf);
return 1;
}
int
vg_ocl_copyout_arg(vg_ocl_context_t *vocp, int wslot, int arg,
void *buffer, size_t size)
{
cl_int slot, ret;
slot = (wslot < 0) ? 0 : wslot;
assert((slot >= 0) && (slot < MAX_SLOT));
assert(size <= vocp->voc_arg_size[slot][arg]);
ret = clEnqueueWriteBuffer(vocp->voc_oclcmdq,
vocp->voc_args[slot][arg],
CL_TRUE,
0, size,
buffer,
0, NULL,
NULL);
if (ret) {
fprintf(stderr, "clEnqueueWriteBuffer(%d): ", arg);
vg_ocl_error(vocp, ret, NULL);
return 0;
}
return 1;
}
static void *
vg_ocl_map_arg_buffer(vg_ocl_context_t *vocp, int slot,
int arg, int rw)
{
void *buf;
cl_int ret;
assert((slot >= 0) && (slot < MAX_SLOT));
buf = clEnqueueMapBuffer(vocp->voc_oclcmdq,
vocp->voc_args[slot][arg],
CL_TRUE,
(rw == 2) ? (CL_MAP_READ|CL_MAP_WRITE)
: (rw ? CL_MAP_WRITE : CL_MAP_READ),
0, vocp->voc_arg_size[slot][arg],
0, NULL,
NULL,
&ret);
if (!buf) {
fprintf(stderr, "clEnqueueMapBuffer(%d): ", arg);
vg_ocl_error(vocp, ret, NULL);
return NULL;
}
return buf;
}
static void
vg_ocl_unmap_arg_buffer(vg_ocl_context_t *vocp, int slot,
int arg, void *buf)
{
cl_int ret;
cl_event ev;
assert((slot >= 0) && (slot < MAX_SLOT));
ret = clEnqueueUnmapMemObject(vocp->voc_oclcmdq,
vocp->voc_args[slot][arg],
buf,
0, NULL,
&ev);
if (ret != CL_SUCCESS) {
fprintf(stderr, "clEnqueueUnmapMemObject(%d): ", arg);
vg_ocl_error(vocp, ret, NULL);
return;
}
ret = clWaitForEvents(1, &ev);
clReleaseEvent(ev);
if (ret != CL_SUCCESS) {
fprintf(stderr, "clWaitForEvent(clUnmapMemObject,%d): ", arg);
vg_ocl_error(vocp, ret, NULL);
}
}
int
vg_ocl_kernel_int_arg(vg_ocl_context_t *vocp, int slot,
int arg, int value)
{
cl_int ret;
int i;
for (i = 0; i < MAX_SLOT; i++) {
if ((i != slot) && (slot >= 0))
continue;
ret = clSetKernelArg(vocp->voc_oclkernel[i][2],
arg,
sizeof(value),
&value);
if (ret) {
fprintf(stderr, "clSetKernelArg(%d): ", arg);
vg_ocl_error(vocp, ret, NULL);
return 0;
}
}
return 1;
}
int
vg_ocl_kernel_buffer_arg(vg_ocl_context_t *vocp, int slot,
int arg, void *value, size_t size)
{
cl_int ret;
int i, j, knum, karg;
for (i = 0; i < MAX_SLOT; i++) {
if ((i != slot) && (slot >= 0))
continue;
for (j = 0; vg_ocl_arg_map[arg][j] >= 0; j += 2) {
knum = vg_ocl_arg_map[arg][j];
karg = vg_ocl_arg_map[arg][j+1];
ret = clSetKernelArg(vocp->voc_oclkernel[i][knum],
karg,
size,
value);
if (ret) {
fprintf(stderr,
"clSetKernelArg(%d,%d): ", knum, karg);
vg_ocl_error(vocp, ret, NULL);
return 0;
}
}
}
return 1;
}
static void
vg_ocl_free_args(vg_ocl_context_t *vocp)
{
int i, arg;
for (i = 0; i < MAX_SLOT; i++) {
for (arg = 0; arg < MAX_ARG; arg++) {
if (vocp->voc_args[i][arg]) {
clReleaseMemObject(vocp->voc_args[i][arg]);
vocp->voc_args[i][arg] = NULL;
vocp->voc_arg_size[i][arg] = 0;
}
}
}
}
int
vg_ocl_kernel_dead(vg_ocl_context_t *vocp, int slot)
{
return (vocp->voc_oclkrnwait[slot] == NULL);
}
static int
vg_ocl_kernel_start(vg_ocl_context_t *vocp, int slot, int ncol, int nrow,
int invsize)
{
cl_int val, ret;
cl_event ev;
size_t globalws[2] = { ncol, nrow };
size_t invws = (ncol * nrow) / invsize;
assert(!vocp->voc_oclkrnwait[slot]);
/* heap_invert() preconditions */
assert(is_pow2(invsize) && (invsize > 1));
val = invsize;
ret = clSetKernelArg(vocp->voc_oclkernel[slot][1],
1,
sizeof(val),
&val);
if (ret != CL_SUCCESS) {
vg_ocl_error(vocp, ret, "clSetKernelArg(ncol)");
return 0;
}
ret = clEnqueueNDRangeKernel(vocp->voc_oclcmdq,
vocp->voc_oclkernel[slot][0],
2,
NULL, globalws, NULL,
0, NULL,
&ev);
if (ret != CL_SUCCESS) {
vg_ocl_error(vocp, ret, "clEnqueueNDRange(0)");
return 0;
}
ret = clWaitForEvents(1, &ev);
clReleaseEvent(ev);
if (ret != CL_SUCCESS) {
vg_ocl_error(vocp, ret, "clWaitForEvents(NDRange,0)");
return 0;
}
if (vocp->voc_verify_func[0] &&
!(vocp->voc_verify_func[0])(vocp, slot)) {
fprintf(stderr, "ERROR: Kernel 0 failed verification test\n");
return 0;
}
ret = clEnqueueNDRangeKernel(vocp->voc_oclcmdq,
vocp->voc_oclkernel[slot][1],
1,
NULL, &invws, NULL,
0, NULL,
&ev);
if (ret != CL_SUCCESS) {
vg_ocl_error(vocp, ret, "clEnqueueNDRange(1)");
return 0;
}
ret = clWaitForEvents(1, &ev);
clReleaseEvent(ev);
if (ret != CL_SUCCESS) {
vg_ocl_error(vocp, ret, "clWaitForEvents(NDRange,1)");
return 0;
}
if (vocp->voc_verify_func[1] &&
!(vocp->voc_verify_func[1])(vocp, slot)) {
fprintf(stderr, "ERROR: Kernel 1 failed verification test\n");
return 0;
}
ret = clEnqueueNDRangeKernel(vocp->voc_oclcmdq,
vocp->voc_oclkernel[slot][2],
2,
NULL, globalws, NULL,
0, NULL,
&ev);
if (ret != CL_SUCCESS) {
vg_ocl_error(vocp, ret, "clEnqueueNDRange(2)");
return 0;
}
vocp->voc_oclkrnwait[slot] = ev;
return 1;
}
static int
vg_ocl_kernel_wait(vg_ocl_context_t *vocp, int slot)
{
cl_event ev;
cl_int ret;
ev = vocp->voc_oclkrnwait[slot];
vocp->voc_oclkrnwait[slot] = NULL;
if (ev) {
ret = clWaitForEvents(1, &ev);
clReleaseEvent(ev);
if (ret != CL_SUCCESS) {
vg_ocl_error(vocp, ret, "clWaitForEvents(NDRange,e)");
return 0;
}
}
return 1;
}
static INLINE void
vg_ocl_get_bignum_raw(BIGNUM *bn, const unsigned char *buf)
{
bn_expand(bn, 256);
memcpy(bn->d, buf, 32);
bn->top = (32 / sizeof(BN_ULONG));
}
static INLINE void
vg_ocl_put_bignum_raw(unsigned char *buf, const BIGNUM *bn)
{
int bnlen = (bn->top * sizeof(BN_ULONG));
if (bnlen >= 32) {
memcpy(buf, bn->d, 32);
} else {
memcpy(buf, bn->d, bnlen);
memset(buf + bnlen, 0, 32 - bnlen);
}
}
#define ACCESS_BUNDLE 1024
#define ACCESS_STRIDE (ACCESS_BUNDLE/8)
static void
vg_ocl_get_bignum_tpa(BIGNUM *bn, const unsigned char *buf, int cell)
{
unsigned char bnbuf[32];
int start, i;
start = (((cell / ACCESS_STRIDE) * ACCESS_BUNDLE) +
(cell % ACCESS_STRIDE));
for (i = 0; i < 8; i++)
memcpy(bnbuf+(i*4),
buf + 4*(start + i*ACCESS_STRIDE),
4);
vg_ocl_get_bignum_raw(bn, bnbuf);
}
/*
* Absolutely disgusting.
* We want points in Montgomery form, and it's a lot easier to read the
* coordinates from the structure than to export and re-montgomeryize.
*/
struct ec_point_st {
const EC_METHOD *meth;
BIGNUM X;
BIGNUM Y;
BIGNUM Z;
int Z_is_one;
};
static INLINE void
vg_ocl_get_point(EC_POINT *ppnt, const unsigned char *buf)
{
static const unsigned char mont_one[] = { 0x01,0x00,0x00,0x03,0xd1 };
vg_ocl_get_bignum_raw(&ppnt->X, buf);
vg_ocl_get_bignum_raw(&ppnt->Y, buf + 32);
if (!ppnt->Z_is_one) {
ppnt->Z_is_one = 1;
BN_bin2bn(mont_one, sizeof(mont_one), &ppnt->Z);
}
}
static INLINE void
vg_ocl_put_point(unsigned char *buf, const EC_POINT *ppnt)
{
assert(ppnt->Z_is_one);
vg_ocl_put_bignum_raw(buf, &ppnt->X);
vg_ocl_put_bignum_raw(buf + 32, &ppnt->Y);
}
static void
vg_ocl_put_point_tpa(unsigned char *buf, int cell, const EC_POINT *ppnt)
{
unsigned char pntbuf[64];
int start, i;
vg_ocl_put_point(pntbuf, ppnt);
start = ((((2 * cell) / ACCESS_STRIDE) * ACCESS_BUNDLE) +
(cell % (ACCESS_STRIDE/2)));
for (i = 0; i < 8; i++)
memcpy(buf + 4*(start + i*ACCESS_STRIDE),
pntbuf+(i*4),
4);
for (i = 0; i < 8; i++)
memcpy(buf + 4*(start + (ACCESS_STRIDE/2) + (i*ACCESS_STRIDE)),
pntbuf+32+(i*4),
4);
}
static void
vg_ocl_get_point_tpa(EC_POINT *ppnt, const unsigned char *buf, int cell)
{
unsigned char pntbuf[64];
int start, i;
start = ((((2 * cell) / ACCESS_STRIDE) * ACCESS_BUNDLE) +
(cell % (ACCESS_STRIDE/2)));
for (i = 0; i < 8; i++)
memcpy(pntbuf+(i*4),
buf + 4*(start + i*ACCESS_STRIDE),
4);
for (i = 0; i < 8; i++)
memcpy(pntbuf+32+(i*4),
buf + 4*(start + (ACCESS_STRIDE/2) + (i*ACCESS_STRIDE)),
4);
vg_ocl_get_point(ppnt, pntbuf);
}
void
show_elapsed(struct timeval *tv, const char *place)
{
struct timeval now, delta;
gettimeofday(&now, NULL);
timersub(&now, tv, &delta);
fprintf(stderr,
"%s spent %ld.%06lds\n", place, delta.tv_sec, delta.tv_usec);
}
/*
* GPU address matching methods
*
* gethash: GPU computes and returns all address hashes.
* + Works with any matching method, including regular expressions.
* - The CPU will not be able to keep up with mid- to high-end GPUs.
*
* prefix: GPU computes hash, searches a range list, and discards.
* + Fast, minimal work for CPU.
*/
static int
vg_ocl_gethash_check(vg_ocl_context_t *vocp, int slot)
{
vg_exec_context_t *vxcp = &vocp->base;
vg_context_t *vcp = vocp->base.vxc_vc;
vg_test_func_t test_func = vcp->vc_test;
unsigned char *ocl_hashes_out;
int i, res = 0, round;
ocl_hashes_out = (unsigned char *)
vg_ocl_map_arg_buffer(vocp, slot, 0, 0);
round = vocp->voc_ocl_cols * vocp->voc_ocl_rows;
for (i = 0; i < round; i++, vxcp->vxc_delta++) {
memcpy(&vxcp->vxc_binres[1],
ocl_hashes_out + (20*i),
20);
res = test_func(vxcp);
if (res)
break;
}
vg_ocl_unmap_arg_buffer(vocp, slot, 0, ocl_hashes_out);
return res;
}
static int
vg_ocl_gethash_init(vg_ocl_context_t *vocp)
{
int i;
if (!vg_ocl_create_kernel(vocp, 2, "hash_ec_point_get"))
return 0;
for (i = 0; i < vocp->voc_nslots; i++) {
/* Each slot gets its own hash output buffer */
if (!vg_ocl_kernel_arg_alloc(vocp, i, 0,
20 *
vocp->voc_ocl_rows *
vocp->voc_ocl_cols, 1))
return 0;
}
vocp->voc_rekey_func = NULL;
vocp->voc_check_func = vg_ocl_gethash_check;
return 1;
}
static int
vg_ocl_prefix_rekey(vg_ocl_context_t *vocp)
{
vg_context_t *vcp = vocp->base.vxc_vc;
unsigned char *ocl_targets_in;
uint32_t *ocl_found_out;
int i;
/* Set the found indicator for each slot to -1 */
for (i = 0; i < vocp->voc_nslots; i++) {
ocl_found_out = (uint32_t *)
vg_ocl_map_arg_buffer(vocp, i, 0, 1);
ocl_found_out[0] = 0xffffffff;
vg_ocl_unmap_arg_buffer(vocp, i, 0, ocl_found_out);
}
if (vocp->voc_pattern_rewrite) {
/* Count number of range records */
i = vg_context_hash160_sort(vcp, NULL);
if (!i) {
fprintf(stderr,
"No range records available, exiting\n");
return 0;
}
if (i > vocp->voc_pattern_alloc) {
/* (re)allocate target buffer */
if (!vg_ocl_kernel_arg_alloc(vocp, -1, 5, 40 * i, 0))
return 0;
vocp->voc_pattern_alloc = i;
}
/* Write range records */
ocl_targets_in = (unsigned char *)
vg_ocl_map_arg_buffer(vocp, 0, 5, 1);
vg_context_hash160_sort(vcp, ocl_targets_in);
vg_ocl_unmap_arg_buffer(vocp, 0, 5, ocl_targets_in);
vg_ocl_kernel_int_arg(vocp, -1, 4, i);
vocp->voc_pattern_rewrite = 0;
}
return 1;
}
static int
vg_ocl_prefix_check(vg_ocl_context_t *vocp, int slot)
{
vg_exec_context_t *vxcp = &vocp->base;
vg_context_t *vcp = vocp->base.vxc_vc;
vg_test_func_t test_func = vcp->vc_test;
uint32_t *ocl_found_out;
uint32_t found_delta;
int orig_delta, tablesize;
int res = 0;
/* Retrieve the found indicator */
ocl_found_out = (uint32_t *)
vg_ocl_map_arg_buffer(vocp, slot, 0, 2);
found_delta = ocl_found_out[0];
if (found_delta != 0xffffffff) {
/* GPU code claims match, verify with CPU version */
orig_delta = vxcp->vxc_delta;
vxcp->vxc_delta += found_delta;
vg_exec_context_calc_address(vxcp);
/* Make sure the GPU produced the expected hash */
res = 0;
if (!memcmp(vxcp->vxc_binres + 1,
ocl_found_out + 2,
20)) {
res = test_func(vxcp);
}
if (res == 0) {
/*
* The match was not found in
* the pattern list. Hmm.
*/
tablesize = ocl_found_out[2];
fprintf(stderr, "Match idx: %d\n", ocl_found_out[1]);
fprintf(stderr, "CPU hash: ");
fdumphex(stderr, vxcp->vxc_binres + 1, 20);
fprintf(stderr, "GPU hash: ");
fdumphex(stderr,
(unsigned char *) (ocl_found_out + 2), 20);
fprintf(stderr, "Found delta: %d "
"Start delta: %d\n",
found_delta, orig_delta);
res = 1;
}
vocp->voc_pattern_rewrite = 1;
} else {
vxcp->vxc_delta += (vocp->voc_ocl_cols * vocp->voc_ocl_rows);
}
vg_ocl_unmap_arg_buffer(vocp, slot, 0, ocl_found_out);
return res;
}
static int
vg_ocl_prefix_init(vg_ocl_context_t *vocp)
{
int i;
if (!vg_ocl_create_kernel(vocp, 2, "hash_ec_point_search_prefix"))
return 0;
for (i = 0; i < vocp->voc_nslots; i++) {
if (!vg_ocl_kernel_arg_alloc(vocp, i, 0, 28, 1))
return 0;
}
vocp->voc_rekey_func = vg_ocl_prefix_rekey;
vocp->voc_check_func = vg_ocl_prefix_check;
vocp->voc_pattern_rewrite = 1;
vocp->voc_pattern_alloc = 0;
return 1;
}
static int
vg_ocl_config_pattern(vg_ocl_context_t *vocp)
{
vg_context_t *vcp = vocp->base.vxc_vc;
int i;
i = vg_context_hash160_sort(vcp, NULL);
if (i > 0) {
if (vcp->vc_verbose > 1)
fprintf(stderr, "Using OpenCL prefix matcher\n");
/* Configure for prefix matching */
return vg_ocl_prefix_init(vocp);
}
if (vcp->vc_verbose > 0)
fprintf(stderr, "WARNING: Using CPU pattern matcher\n");
return vg_ocl_gethash_init(vocp);
}
/*
* Temporary buffer content verification functions
* This provides a simple test of the kernel, the OpenCL compiler,
* and the hardware.
*/
static int
vg_ocl_verify_temporary(vg_ocl_context_t *vocp, int slot, int z_inverted)
{
vg_exec_context_t *vxcp = &vocp->base;
unsigned char *point_tmp = NULL, *z_heap = NULL;
unsigned char *ocl_points_in = NULL, *ocl_strides_in = NULL;
const EC_GROUP *pgroup;
EC_POINT *ppr = NULL, *ppc = NULL, *pps = NULL, *ppt = NULL;
BIGNUM bnz, bnez, bnm, *bnzc;
BN_CTX *bnctx = NULL;
BN_MONT_CTX *bnmont;
int ret = 0;
int mismatches = 0, mm_r;
int x, y, bx;
static const unsigned char raw_modulus[] = {
0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
0xFF,0xFF,0xFF,0xFE,0xFF,0xFF,0xFC,0x2F
};
BN_init(&bnz);
BN_init(&bnez);
BN_init(&bnm);
bnctx = BN_CTX_new();
bnmont = BN_MONT_CTX_new();
pgroup = EC_KEY_get0_group(vxcp->vxc_key);
ppr = EC_POINT_new(pgroup);
ppc = EC_POINT_new(pgroup);
pps = EC_POINT_new(pgroup);
ppt = EC_POINT_new(pgroup);
if (!bnctx || !bnmont || !ppr || !ppc || !pps || !ppt) {
fprintf(stderr, "ERROR: out of memory\n");
goto out;
}
BN_bin2bn(raw_modulus, sizeof(raw_modulus), &bnm);
BN_MONT_CTX_set(bnmont, &bnm, bnctx);
if (z_inverted) {
bnzc = &bnez;
} else {
bnzc = &pps->Z;
}
z_heap = (unsigned char *)
vg_ocl_map_arg_buffer(vocp, slot, 1, 0);
point_tmp = (unsigned char *)
vg_ocl_map_arg_buffer(vocp, slot, 2, 0);
ocl_points_in = (unsigned char *)
vg_ocl_map_arg_buffer(vocp, slot, 3, 0);
ocl_strides_in = (unsigned char *)
vg_ocl_map_arg_buffer(vocp, slot, 4, 0);
if (!z_heap || !point_tmp || !ocl_points_in || !ocl_strides_in) {
fprintf(stderr, "ERROR: could not map OpenCL point buffers\n");
goto out;
}
for (y = 0; y < vocp->voc_ocl_rows; y++) {
vg_ocl_get_point(ppr, ocl_strides_in + (64*y));
bx = y * vocp->voc_ocl_cols;
mm_r = 0;
for (x = 0; x < vocp->voc_ocl_cols; x++) {
vg_ocl_get_point_tpa(ppc, ocl_points_in, x);
assert(ppr->Z_is_one && ppc->Z_is_one);
EC_POINT_add(pgroup, pps, ppc, ppr, bnctx);
assert(!pps->Z_is_one);
vg_ocl_get_point_tpa(ppt, point_tmp, bx + x);
vg_ocl_get_bignum_tpa(&bnz, z_heap, bx + x);
if (z_inverted) {
BN_mod_inverse(&bnez, &pps->Z, &bnm, bnctx);
BN_to_montgomery(&bnez, &bnez, bnmont, bnctx);
BN_to_montgomery(&bnez, &bnez, bnmont, bnctx);
}
if (BN_cmp(&ppt->X, &pps->X) ||
BN_cmp(&ppt->Y, &pps->Y) ||
BN_cmp(&bnz, bnzc)) {
if (!mismatches) {
fprintf(stderr, "Base privkey: ");
fdumpbn(stderr, EC_KEY_get0_private_key(
vxcp->vxc_key));
}
mismatches++;
fprintf(stderr, "Mismatch for kernel %d, "
"offset %d (%d,%d)\n",
z_inverted, bx + x, y, x);
if (!mm_r) {
mm_r = 1;
fprintf(stderr, "Row X : ");
fdumpbn(stderr, &ppr->X);
fprintf(stderr, "Row Y : ");
fdumpbn(stderr, &ppr->Y);
}
fprintf(stderr, "Column X: ");
fdumpbn(stderr, &ppc->X);
fprintf(stderr, "Column Y: ");
fdumpbn(stderr, &ppc->Y);
if (BN_cmp(&ppt->X, &pps->X)) {
fprintf(stderr, "Expect X: ");
fdumpbn(stderr, &pps->X);
fprintf(stderr, "Device X: ");
fdumpbn(stderr, &ppt->X);
}
if (BN_cmp(&ppt->Y, &pps->Y)) {
fprintf(stderr, "Expect Y: ");
fdumpbn(stderr, &pps->Y);
fprintf(stderr, "Device Y: ");
fdumpbn(stderr, &ppt->Y);
}
if (BN_cmp(&bnz, bnzc)) {
fprintf(stderr, "Expect Z: ");
fdumpbn(stderr, bnzc);
fprintf(stderr, "Device Z: ");
fdumpbn(stderr, &bnz);
}
}
}
}
ret = !mismatches;
out:
if (z_heap)
vg_ocl_unmap_arg_buffer(vocp, slot, 1, z_heap);
if (point_tmp)
vg_ocl_unmap_arg_buffer(vocp, slot, 2, point_tmp);
if (ocl_points_in)
vg_ocl_unmap_arg_buffer(vocp, slot, 3, ocl_points_in);
if (ocl_strides_in)
vg_ocl_unmap_arg_buffer(vocp, slot, 4, ocl_strides_in);
if (ppr)
EC_POINT_free(ppr);
if (ppc)
EC_POINT_free(ppc);
if (pps)
EC_POINT_free(pps);
if (ppt)
EC_POINT_free(ppt);
BN_clear_free(&bnz);
BN_clear_free(&bnez);
BN_clear_free(&bnm);
if (bnmont)
BN_MONT_CTX_free(bnmont);
if (bnctx)
BN_CTX_free(bnctx);
return ret;
}
static int
vg_ocl_verify_k0(vg_ocl_context_t *vocp, int slot)
{
return vg_ocl_verify_temporary(vocp, slot, 0);
}
static int
vg_ocl_verify_k1(vg_ocl_context_t *vocp, int slot)
{
return vg_ocl_verify_temporary(vocp, slot, 1);
}
static void *
vg_opencl_thread(void *arg)
{
vg_ocl_context_t *vocp = (vg_ocl_context_t *) arg;
vg_context_t *vcp = vocp->base.vxc_vc;
int halt = 0;
int slot = -1;
int rows, cols, invsize;
unsigned long long idleu, busyu;
double pidle;
struct timeval tv, tvt, tvd, idle, busy;
memset(&idle, 0, sizeof(idle));
memset(&busy, 0, sizeof(busy));
while (1) {
pthread_mutex_lock(&vocp->voc_lock);
if (halt) {
halt = 0;
vocp->voc_halt = 1;
}
if (slot != -1) {
assert(vocp->voc_ocl_slot == slot);
vocp->voc_ocl_slot = -1;
slot = -1;
pthread_cond_signal(&vocp->voc_wait);
}
if (vocp->voc_ocl_slot == -1) {
gettimeofday(&tv, NULL);
while (vocp->voc_ocl_slot == -1) {
if (vocp->voc_halt)
goto out;
pthread_cond_wait(&vocp->voc_wait,
&vocp->voc_lock);
}
gettimeofday(&tvt, NULL);
timersub(&tvt, &tv, &tvd);
timeradd(&tvd, &idle, &idle);
}
slot = vocp->voc_ocl_slot;
rows = vocp->voc_ocl_rows;
cols = vocp->voc_ocl_cols;
invsize = vocp->voc_ocl_invsize;
pthread_mutex_unlock(&vocp->voc_lock);
gettimeofday(&tv, NULL);
if (!vg_ocl_kernel_start(vocp, slot, cols, rows, invsize))
halt = 1;
if (!vg_ocl_kernel_wait(vocp, slot))
halt = 1;
if (vcp->vc_verbose > 1) {
gettimeofday(&tvt, NULL);
timersub(&tvt, &tv, &tvd);
timeradd(&tvd, &busy, &busy);
if ((busy.tv_sec + idle.tv_sec) > 1) {
idleu = (1000000 * idle.tv_sec) + idle.tv_usec;
busyu = (1000000 * busy.tv_sec) + busy.tv_usec;
pidle = ((double) idleu) / (idleu + busyu);
if (pidle > 0.01) {
fprintf(stderr, "\rGPU idle: %.2f%%"
" "
" \n",
100 * pidle);
}
memset(&idle, 0, sizeof(idle));
memset(&busy, 0, sizeof(busy));
}
}
}
out:
pthread_mutex_unlock(&vocp->voc_lock);
return NULL;
}
/*
* Address search thread main loop
*/
void *
vg_opencl_loop(void *arg)
{
vg_ocl_context_t *vocp = (vg_ocl_context_t *) arg;
int i;
int round, nrows, ncols;
const BN_ULONG rekey_max = 100000000;
BN_ULONG npoints, rekey_at;
EC_KEY *pkey = NULL;
const EC_GROUP *pgroup;
const EC_POINT *pgen;
EC_POINT **ppbase = NULL, **pprow, *pbatchinc = NULL, *poffset = NULL;
EC_POINT *pseek = NULL;
unsigned char *ocl_points_in, *ocl_strides_in;
vg_context_t *vcp = vocp->base.vxc_vc;
vg_exec_context_t *vxcp = &vocp->base;
int slot, nslots;
int slot_busy = 0, slot_done = 0, halt = 0;
int c = 0, output_interval = 1000;
struct timeval tvstart;
pkey = vxcp->vxc_key;
pgroup = EC_KEY_get0_group(pkey);
pgen = EC_GROUP_get0_generator(pgroup);
round = vocp->voc_ocl_rows * vocp->voc_ocl_cols;
if (!vcp->vc_remove_on_match &&
(vcp->vc_chance >= 1.0f) &&
(vcp->vc_chance < round) &&
(vcp->vc_verbose > 0)) {
fprintf(stderr, "WARNING: low pattern difficulty\n");
fprintf(stderr,
"WARNING: better match throughput is possible "
"using vanitygen on the CPU\n");
}
slot = 0;
nslots = 2;
vocp->voc_nslots = nslots;
nrows = vocp->voc_ocl_rows;
ncols = vocp->voc_ocl_cols;
ppbase = (EC_POINT **) malloc((nrows + ncols) *
sizeof(EC_POINT*));
if (!ppbase)
goto enomem;
for (i = 0; i < (nrows + ncols); i++) {
ppbase[i] = EC_POINT_new(pgroup);
if (!ppbase[i])
goto enomem;
}
pprow = ppbase + ncols;
pbatchinc = EC_POINT_new(pgroup);
poffset = EC_POINT_new(pgroup);
pseek = EC_POINT_new(pgroup);
if (!pbatchinc || !poffset || !pseek)
goto enomem;
BN_set_word(&vxcp->vxc_bntmp, ncols);
EC_POINT_mul(pgroup, pbatchinc, &vxcp->vxc_bntmp, NULL, NULL,
vxcp->vxc_bnctx);
EC_POINT_make_affine(pgroup, pbatchinc, vxcp->vxc_bnctx);
BN_set_word(&vxcp->vxc_bntmp, round);
EC_POINT_mul(pgroup, poffset, &vxcp->vxc_bntmp, NULL, NULL,
vxcp->vxc_bnctx);
EC_POINT_make_affine(pgroup, poffset, vxcp->vxc_bnctx);
if (!vg_ocl_config_pattern(vocp))
goto enomem;
for (i = 0; i < nslots; i++) {
/*
* Each work group gets its own:
* - Column point array
*/
if (!vg_ocl_kernel_arg_alloc(vocp, i, 4, 32 * 2 * nrows, 1))
goto enomem;
}
/*
* All instances share:
* - The z_heap and point scratch spaces
* - The row point array
*/
if (!vg_ocl_kernel_arg_alloc(vocp, -1, 1,
round_up_pow2(32 * 2 * round, 4096), 0) ||
!vg_ocl_kernel_arg_alloc(vocp, -1, 2,
round_up_pow2(32 * 2 * round, 4096), 0) ||
!vg_ocl_kernel_arg_alloc(vocp, -1, 3,
round_up_pow2(32 * 2 * ncols, 4096), 1))
goto enomem;
npoints = 0;
rekey_at = 0;
vxcp->vxc_binres[0] = vcp->vc_addrtype;
if (pthread_create(&vocp->voc_ocl_thread, NULL,
vg_opencl_thread, vocp))
goto enomem;
gettimeofday(&tvstart, NULL);
l_rekey:
if (vocp->voc_rekey_func &&
!vocp->voc_rekey_func(vocp))
goto enomem;
/* Generate a new random private key */
EC_KEY_generate_key(pkey);
npoints = 0;
/* Determine rekey interval */
EC_GROUP_get_order(pgroup, &vxcp->vxc_bntmp, vxcp->vxc_bnctx);
BN_sub(&vxcp->vxc_bntmp2,
&vxcp->vxc_bntmp,
EC_KEY_get0_private_key(pkey));
rekey_at = BN_get_word(&vxcp->vxc_bntmp2);
if ((rekey_at == BN_MASK2) || (rekey_at > rekey_max))
rekey_at = rekey_max;
assert(rekey_at > 0);
EC_POINT_copy(ppbase[0], EC_KEY_get0_public_key(pkey));
if (vcp->vc_pubkey_base) {
EC_POINT_add(pgroup,
ppbase[0],
ppbase[0],
vcp->vc_pubkey_base,
vxcp->vxc_bnctx);
}
/* Build the base array of sequential points */
for (i = 1; i < ncols; i++) {
EC_POINT_add(pgroup,
ppbase[i],
ppbase[i-1],
pgen, vxcp->vxc_bnctx);
}
EC_POINTs_make_affine(pgroup, ncols, ppbase, vxcp->vxc_bnctx);
/* Fill the sequential point array */
ocl_points_in = (unsigned char *)
vg_ocl_map_arg_buffer(vocp, 0, 3, 1);
if (!ocl_points_in)
goto enomem;
for (i = 0; i < ncols; i++)
vg_ocl_put_point_tpa(ocl_points_in, i, ppbase[i]);
vg_ocl_unmap_arg_buffer(vocp, 0, 3, ocl_points_in);
/*
* Set up the initial row increment table.
* Set the first element to pgen -- effectively
* skipping the exact key generated above.
*/
EC_POINT_copy(pprow[0], pgen);
for (i = 1; i < nrows; i++) {
EC_POINT_add(pgroup,
pprow[i],
pprow[i-1],
pbatchinc, vxcp->vxc_bnctx);
}
EC_POINTs_make_affine(pgroup, nrows, pprow, vxcp->vxc_bnctx);
vxcp->vxc_delta = 1;
npoints = 1;
slot = 0;
slot_busy = 0;
slot_done = 0;
while (1) {
if (slot_done) {
assert(rekey_at > 0);
slot_done = 0;
/* Call the result check function */
switch (vocp->voc_check_func(vocp, slot)) {
case 1:
rekey_at = 0;
break;
case 2:
halt = 1;
break;
default:
break;
}
c += round;
if (!halt && (c >= output_interval)) {
output_interval =
vg_output_timing(vcp, c, &tvstart);
c = 0;
}
}
if (vcp->vc_halt)
halt = 1;
if (halt)
break;
if ((npoints + round) < rekey_at) {
if (npoints > 1) {
/* Move the row increments forward */
for (i = 0; i < nrows; i++) {
EC_POINT_add(pgroup,
pprow[i],
pprow[i],
poffset,
vxcp->vxc_bnctx);
}
EC_POINTs_make_affine(pgroup, nrows, pprow,
vxcp->vxc_bnctx);
}
/* Copy the row stride array to the device */
ocl_strides_in = (unsigned char *)
vg_ocl_map_arg_buffer(vocp, slot, 4, 1);
if (!ocl_strides_in)
goto enomem;
memset(ocl_strides_in, 0, 64*nrows);
for (i = 0; i < nrows; i++)
vg_ocl_put_point(ocl_strides_in + (64*i),
pprow[i]);
vg_ocl_unmap_arg_buffer(vocp, slot, 4, ocl_strides_in);
npoints += round;
pthread_mutex_lock(&vocp->voc_lock);
while (vocp->voc_ocl_slot != -1) {
assert(slot_busy);
pthread_cond_wait(&vocp->voc_wait,
&vocp->voc_lock);
}
if (vocp->voc_halt) {
pthread_mutex_unlock(&vocp->voc_lock);
halt = 1;
break;
}
vocp->voc_ocl_slot = slot;
pthread_cond_signal(&vocp->voc_wait);
pthread_mutex_unlock(&vocp->voc_lock);
slot_done = slot_busy;
slot_busy = 1;
slot = (slot + 1) % nslots;
} else {
if (slot_busy) {
pthread_mutex_lock(&vocp->voc_lock);
while (vocp->voc_ocl_slot != -1) {
assert(vocp->voc_ocl_slot ==
((slot + nslots - 1) % nslots));
pthread_cond_wait(&vocp->voc_wait,
&vocp->voc_lock);
}
pthread_mutex_unlock(&vocp->voc_lock);
slot_busy = 0;
slot_done = 1;
}
if (!rekey_at ||
(!slot_done && ((npoints + round) >= rekey_at)))
goto l_rekey;
}
}
if (0) {
enomem:
fprintf(stderr, "ERROR: allocation failure?\n");
}
if (halt) {
if (vcp->vc_verbose > 1) {
printf("Halting...");
fflush(stdout);
}
pthread_mutex_lock(&vocp->voc_lock);
vocp->voc_halt = 1;
pthread_cond_signal(&vocp->voc_wait);
while (vocp->voc_ocl_slot != -1) {
assert(slot_busy);
pthread_cond_wait(&vocp->voc_wait,
&vocp->voc_lock);
}
slot_busy = 0;
pthread_mutex_unlock(&vocp->voc_lock);
pthread_join(vocp->voc_ocl_thread, NULL);
if (vcp->vc_verbose > 1)
printf("done!\n");
}
if (ppbase) {
for (i = 0; i < (nrows + ncols); i++)
if (ppbase[i])
EC_POINT_free(ppbase[i]);
free(ppbase);
}
if (pbatchinc)
EC_POINT_free(pbatchinc);
/* Release the argument buffers */
vg_ocl_free_args(vocp);
vocp->voc_halt = 0;
vocp->voc_ocl_slot = -1;
vg_context_thread_exit(vcp);
return NULL;
}
/*
* OpenCL platform/device selection junk
*/
static int
get_device_list(cl_platform_id pid, cl_device_id **list_out)
{
cl_uint nd;
cl_int res;
cl_device_id *ids;
res = clGetDeviceIDs(pid, CL_DEVICE_TYPE_ALL, 0, NULL, &nd);
if (res != CL_SUCCESS) {
vg_ocl_error(NULL, res, "clGetDeviceIDs(0)");
*list_out = NULL;
return -1;
}
if (nd) {
ids = (cl_device_id *) malloc(nd * sizeof(*ids));
if (ids == NULL) {
fprintf(stderr, "Could not allocate device ID list\n");
*list_out = NULL;
return -1;
}
res = clGetDeviceIDs(pid, CL_DEVICE_TYPE_ALL, nd, ids, NULL);
if (res != CL_SUCCESS) {
vg_ocl_error(NULL, res, "clGetDeviceIDs(n)");
free(ids);
*list_out = NULL;
return -1;
}
*list_out = ids;
}
return nd;
}
static void
show_devices(cl_platform_id pid, cl_device_id *ids, int nd, int base)
{
int i;
char nbuf[128];
char vbuf[128];
size_t len;
cl_int res;
for (i = 0; i < nd; i++) {
res = clGetDeviceInfo(ids[i], CL_DEVICE_NAME,
sizeof(nbuf), nbuf, &len);
if (res != CL_SUCCESS)
continue;
if (len >= sizeof(nbuf))
len = sizeof(nbuf) - 1;
nbuf[len] = '\0';
res = clGetDeviceInfo(ids[i], CL_DEVICE_VENDOR,
sizeof(vbuf), vbuf, &len);
if (res != CL_SUCCESS)
continue;
if (len >= sizeof(vbuf))
len = sizeof(vbuf) - 1;
vbuf[len] = '\0';
fprintf(stderr, " %d: [%s] %s\n", i + base, vbuf, nbuf);
}
}
static cl_device_id
get_device(cl_platform_id pid, int num)
{
int nd;
cl_device_id id, *ids;
nd = get_device_list(pid, &ids);
if (nd < 0)
return NULL;
if (!nd) {
fprintf(stderr, "No OpenCL devices found\n");
return NULL;
}
if (num < 0) {
if (nd == 1)
num = 0;
else
num = nd;
}
if (num < nd) {
id = ids[num];
free(ids);
return id;
}
free(ids);
return NULL;
}
static int
get_platform_list(cl_platform_id **list_out)
{
cl_uint np;
cl_int res;
cl_platform_id *ids;
res = clGetPlatformIDs(0, NULL, &np);
if (res != CL_SUCCESS) {
vg_ocl_error(NULL, res, "clGetPlatformIDs(0)");
*list_out = NULL;
return -1;
}
if (np) {
ids = (cl_platform_id *) malloc(np * sizeof(*ids));
if (ids == NULL) {
fprintf(stderr,
"Could not allocate platform ID list\n");
*list_out = NULL;
return -1;
}
res = clGetPlatformIDs(np, ids, NULL);
if (res != CL_SUCCESS) {
vg_ocl_error(NULL, res, "clGetPlatformIDs(n)");
free(ids);
*list_out = NULL;
return -1;
}
*list_out = ids;
}
return np;
}
void
show_platforms(cl_platform_id *ids, int np, int base)
{
int i;
char nbuf[128];
char vbuf[128];
size_t len;
cl_int res;
for (i = 0; i < np; i++) {
res = clGetPlatformInfo(ids[i], CL_PLATFORM_NAME,
sizeof(nbuf), nbuf, &len);
if (res != CL_SUCCESS) {
vg_ocl_error(NULL, res, "clGetPlatformInfo(NAME)");
continue;
}
if (len >= sizeof(nbuf))
len = sizeof(nbuf) - 1;
nbuf[len] = '\0';
res = clGetPlatformInfo(ids[i], CL_PLATFORM_VENDOR,
sizeof(vbuf), vbuf, &len);
if (res != CL_SUCCESS) {
vg_ocl_error(NULL, res, "clGetPlatformInfo(VENDOR)");
continue;
}
if (len >= sizeof(vbuf))
len = sizeof(vbuf) - 1;
vbuf[len] = '\0';
fprintf(stderr, "%d: [%s] %s\n", i + base, vbuf, nbuf);
}
}
static cl_platform_id
get_platform(int num)
{
int np;
cl_platform_id id, *ids;
np = get_platform_list(&ids);
if (np < 0)
return NULL;
if (!np) {
fprintf(stderr, "No OpenCL platforms available\n");
return NULL;
}
if (num < 0) {
if (np == 1)
num = 0;
else
num = np;
}
if (num < np) {
id = ids[num];
free(ids);
return id;
}
free(ids);
return NULL;
}
void
enumerate_opencl(void)
{
cl_platform_id *pids;
cl_device_id *dids;
int np, nd, i;
np = get_platform_list(&pids);
if (!np) {
fprintf(stderr, "No OpenCL platforms available\n");
return;
}
fprintf(stderr, "Available OpenCL platforms:\n");
for (i = 0; i < np; i++) {
show_platforms(&pids[i], 1, i);
nd = get_device_list(pids[i], &dids);
if (!nd) {
fprintf(stderr, " -- No devices\n");
} else {
show_devices(pids[i], dids, nd, 0);
}
}
}
cl_device_id
get_opencl_device(int platformidx, int deviceidx)
{
cl_platform_id pid;
cl_device_id did = NULL;
pid = get_platform(platformidx);
if (pid) {
did = get_device(pid, deviceidx);
if (did)
return did;
}
enumerate_opencl();
return NULL;
}
vg_ocl_context_t *
vg_ocl_context_new(vg_context_t *vcp,
int platformidx, int deviceidx, int safe_mode, int verify,
int worksize, int nthreads, int nrows, int ncols,
int invsize)
{
cl_device_id did;
int round, full_threads, wsmult;
cl_ulong memsize, allocsize;
vg_ocl_context_t *vocp;
/* Find the device */
did = get_opencl_device(platformidx, deviceidx);
if (!did) {
return 0;
}
vocp = (vg_ocl_context_t *) malloc(sizeof(*vocp));
if (!vocp)
return NULL;
/* Open the device and compile the kernel */
if (!vg_ocl_init(vcp, vocp, did, safe_mode)) {
free(vocp);
return NULL;
}
if (verify) {
if (vcp->vc_verbose > 0) {
fprintf(stderr, "WARNING: "
"Hardware verification mode enabled\n");
}
if (!nthreads)
nthreads = 1;
vocp->voc_verify_func[0] = vg_ocl_verify_k0;
vocp->voc_verify_func[1] = vg_ocl_verify_k1;
}
/*
* nrows: number of point rows per job
* ncols: number of point columns per job
* invsize: number of modular inversion tasks per job
* (each task performs (nrows*ncols)/invsize inversions)
* nslots: number of kernels
* (create two, keep one running while we service the other or wait)
*/
if (!nthreads) {
/* Pick nthreads sufficient to saturate one compute unit */
if (vg_ocl_device_gettype(vocp->voc_ocldid) &
CL_DEVICE_TYPE_CPU)
nthreads = 1;
else
nthreads = vg_ocl_device_getsizet(vocp->voc_ocldid,
CL_DEVICE_MAX_WORK_GROUP_SIZE);
}
full_threads = vg_ocl_device_getsizet(vocp->voc_ocldid,
CL_DEVICE_MAX_COMPUTE_UNITS);
full_threads *= nthreads;
/*
* The work size selection is complicated, and the most
* important factor is the batch size of the heap_invert kernel.
* Each value added to the batch trades one complete modular
* inversion for four multiply operations. Ideally the work
* size would be as large as possible. The practical limiting
* factors are:
* 1. Available memory
* 2. Responsiveness and operational latency
*
* We take a naive approach and limit batch size to a point of
* sufficiently diminishing returns, hoping that responsiveness
* will be sufficient.
*
* The measured value for the OpenSSL implementations on my CPU
* is 80:1. This causes heap_invert to get batches of 20 or so
* for free, and receive 10% incremental returns at 200. The CPU
* work size is therefore set to 256.
*
* The ratio on most GPUs with the oclvanitygen implementations
* is closer to 500:1, and larger batches are required for
* good performance.
*/
if (!worksize) {
if (vg_ocl_device_gettype(vocp->voc_ocldid) &
CL_DEVICE_TYPE_GPU)
worksize = 2048;
else
worksize = 256;
}
if (!ncols) {
memsize = vg_ocl_device_getulong(vocp->voc_ocldid,
CL_DEVICE_GLOBAL_MEM_SIZE);
allocsize = vg_ocl_device_getulong(vocp->voc_ocldid,
CL_DEVICE_MAX_MEM_ALLOC_SIZE);
memsize /= 2;
ncols = full_threads;
nrows = 2;
/* Find row and column counts close to sqrt(full_threads) */
while ((ncols > nrows) && !(ncols & 1)) {
ncols /= 2;
nrows *= 2;
}
/*
* Increase row & column counts to satisfy work size
* multiplier or fill available memory.
*/
wsmult = 1;
while ((!worksize || ((wsmult * 2) <= worksize)) &&
((ncols * nrows * 2 * 128) < memsize) &&
((ncols * nrows * 2 * 64) < allocsize)) {
if (ncols > nrows)
nrows *= 2;
else
ncols *= 2;
wsmult *= 2;
}
}
round = nrows * ncols;
if (!invsize) {
invsize = 2;
while (!(round % (invsize << 1)) &&
((round / invsize) > full_threads))
invsize <<= 1;
}
if (vcp->vc_verbose > 1) {
fprintf(stderr, "Grid size: %dx%d\n", ncols, nrows);
fprintf(stderr, "Modular inverse: %d threads, %d ops each\n",
round/invsize, invsize);
}
if ((round % invsize) || !is_pow2(invsize) || (invsize < 2)) {
if (vcp->vc_verbose <= 1) {
fprintf(stderr, "Grid size: %dx%d\n", ncols, nrows);
fprintf(stderr,
"Modular inverse: %d threads, %d ops each\n",
round/invsize, invsize);
}
if (round % invsize)
fprintf(stderr,
"Modular inverse work size must "
"evenly divide points\n");
else
fprintf(stderr,
"Modular inverse work per task (%d) "
"must be a power of 2\n", invsize);
goto out_fail;
}
vocp->voc_ocl_rows = nrows;
vocp->voc_ocl_cols = ncols;
vocp->voc_ocl_invsize = invsize;
return vocp;
out_fail:
vg_ocl_context_free(vocp);
return NULL;
}
void
vg_ocl_context_free(vg_ocl_context_t *vocp)
{
vg_ocl_del(vocp);
free(vocp);
}