various small changes

heavy: reduce by 256 threads default intensity to all -i 20
cuda: put static thread init bools outside the code (made once)
api: fix nvml header to build without

JHA/jackpotcoin.cu

@@ -83,6 +83,8 @@ extern "C" unsigned int jackpothash(void *state, const void *input)
     return round;
 }
 
+static bool init[8] = { 0 };
+
 extern "C" int scanhash_jackpot(int thr_id, uint32_t *pdata,
     const uint32_t *ptarget, uint32_t max_nonce,
     unsigned long *hashes_done)
@@ -95,7 +97,6 @@ extern "C" int scanhash_jackpot(int thr_id, uint32_t *pdata,
 	int throughput = opt_work_size ? opt_work_size : (1 << 20); // 256*4096
 	throughput = min(throughput, (int)(max_nonce - first_nonce));
 
-	static bool init[8] = {0,0,0,0,0,0,0,0};
 	if (!init[thr_id])
 	{
 		cudaSetDevice(device_map[thr_id]);

Makefile.am

@@ -19,7 +19,7 @@ ccminer_SOURCES		= elist.h miner.h compat.h \
 			  compat/sys/time.h compat/getopt/getopt.h \
 			  crc32.c hefty1.c scrypt.c \
 			  ccminer.cpp util.cpp \
-			  api.cpp hashlog.cpp stats.cpp sysinfos.cpp cuda.cpp \
+			  api.cpp hashlog.cpp nvml.cpp stats.cpp sysinfos.cpp cuda.cpp \
 			  heavy/heavy.cu \
 			  heavy/cuda_blake512.cu heavy/cuda_blake512.h \
 			  heavy/cuda_combine.cu heavy/cuda_combine.h \
@@ -53,7 +53,6 @@ ccminer_SOURCES		= elist.h miner.h compat.h \
 			  x11/s3.cu
 
 if HAVE_NVML
-ccminer_SOURCES += nvml.cpp
 nvml_defs = -DUSE_WRAPNVML
 nvml_libs = -ldl
 endif

api.cpp

@@ -31,13 +31,9 @@
 #include <sys/stat.h>
 #include <sys/types.h>
 
-
 #include "compat.h"
 #include "miner.h"
-
-#ifdef USE_WRAPNVML
 #include "nvml.h"
-#endif
 
 #ifndef WIN32
 # include <errno.h>
@@ -83,18 +79,11 @@ struct IP4ACCESS {
 static int ips = 1;
 static struct IP4ACCESS *ipaccess = NULL;
 
-// Big enough for largest API request
-//  though a PC with 100s of CPUs may exceed the size ...
-// Current code assumes it can socket send this size also
 #define MYBUFSIZ       16384
-
 #define SOCK_REC_BUFSZ 256
-
-// Socket is on 127.0.0.1
 #define QUEUE          10
 
 #define ALLIP4         "0.0.0.0"
-
 static const char *localaddr = "127.0.0.1";
 static const char *UNAVAILABLE = " - API will not be available";
 static char *buffer = NULL;
@@ -106,7 +95,6 @@ extern int opt_api_listen; /* port */
 extern uint32_t accepted_count;
 extern uint32_t rejected_count;
 extern int num_cpus;
-extern char driver_version[32];
 extern struct stratum_ctx stratum;
 extern char* rpc_user;
 
@@ -115,6 +103,9 @@ extern float cpu_temp(int);
 extern uint32_t cpu_clock(int);
 // cuda.cpp
 int cuda_num_devices();
+int cuda_gpu_clocks(struct cgpu_info *gpu);
+
+char driver_version[32] = { 0 };
 
 /***************************************************************/
 
@@ -132,7 +123,7 @@ static void gpustatus(int thr_id)
 		cgpu->gpu_temp = gpu_temp(cgpu);
 		cgpu->gpu_fan = gpu_fanpercent(cgpu);
 #endif
-		gpu_clocks(cgpu);
+		cuda_gpu_clocks(cgpu);
 
 		// todo: can be 0 if set by algo (auto)
 		if (opt_intensity == 0 && opt_work_size) {
@@ -260,7 +251,7 @@ static void gpuhwinfos(int gpu_id)
 	gpu_info(cgpu);
 #endif
 
-	gpu_clocks(cgpu);
+	cuda_gpu_clocks(cgpu);
 
 	memset(pstate, 0, sizeof(pstate));
 	if (cgpu->gpu_pstate != -1)

blake32.cu

@@ -385,11 +385,12 @@ void blake256_cpu_setBlock_16(uint32_t *penddata, const uint32_t *midstate, cons
 }
 #endif
 
+static bool init[8] = { 0 };
+
 extern "C" int scanhash_blake256(int thr_id, uint32_t *pdata, const uint32_t *ptarget,
 	uint32_t max_nonce, unsigned long *hashes_done, int8_t blakerounds=14)
 {
 	const uint32_t first_nonce = pdata[19];
-	static bool init[8] = { 0, 0, 0, 0, 0, 0, 0, 0 };
 	uint64_t targetHigh = ((uint64_t*)ptarget)[3];
 	uint32_t _ALIGN(64) endiandata[20];
 #if PRECALC64

ccminer.cpp

@@ -61,8 +61,8 @@ void cuda_devicenames();
 void cuda_devicereset();
 int cuda_finddevice(char *name);
 
-#ifdef USE_WRAPNVML
 #include "nvml.h"
+#ifdef USE_WRAPNVML
 wrap_nvml_handle *hnvml = NULL;
 #endif
 

configure.ac

@@ -1,4 +1,4 @@
-AC_INIT([ccminer], [1.5-git])
+AC_INIT([ccminer], [1.5.1-git])
 
 AC_PREREQ([2.59c])
 AC_CANONICAL_SYSTEM

cpuminer-config.h

@@ -156,7 +156,7 @@
 #define PACKAGE_NAME "ccminer"
 
 /* Define to the full name and version of this package. */
-#define PACKAGE_STRING "ccminer 1.5.0"
+#define PACKAGE_STRING "ccminer 1.5.1-git"
 
 /* Define to the one symbol short name of this package. */
 #define PACKAGE_TARNAME "ccminer"
@@ -165,7 +165,7 @@
 #define PACKAGE_URL ""
 
 /* Define to the version of this package. */
-#define PACKAGE_VERSION "1.5.0"
+#define PACKAGE_VERSION "1.5.1-git"
 
 /* If using the C implementation of alloca, define if you know the
    direction of stack growth for your system; otherwise it will be
@@ -188,7 +188,7 @@
 #define USE_XOP 1
 
 /* Version number of package */
-#define VERSION "1.5.0"
+#define VERSION "1.5.1-git"
 
 /* Define curl_free() as free() if our version of curl lacks curl_free. */
 /* #undef curl_free */

cuda.cpp

@@ -145,6 +145,18 @@ cudaError_t MyStreamSynchronize(cudaStream_t stream, int situation, int thr_id)
 	return result;
 }
 
+int cuda_gpu_clocks(struct cgpu_info *gpu)
+{
+	cudaDeviceProp props;
+	if (cudaGetDeviceProperties(&props, gpu->gpu_id) == cudaSuccess) {
+		gpu->gpu_clock = props.clockRate;
+		gpu->gpu_memclock = props.memoryClockRate;
+		gpu->gpu_mem = props.totalGlobalMem;
+		return 0;
+	}
+	return -1;
+}
+
 void cudaReportHardwareFailure(int thr_id, cudaError_t err, const char* func)
 {
 	struct cgpu_info *gpu = &thr_info[thr_id].gpu;

cuda_nist5.cu

@@ -65,6 +65,8 @@ extern "C" void nist5hash(void *state, const void *input)
     memcpy(state, hash, 32);
 }
 
+static bool init[8] = { 0 };
+
 extern "C" int scanhash_nist5(int thr_id, uint32_t *pdata,
     const uint32_t *ptarget, uint32_t max_nonce,
     unsigned long *hashes_done)
@@ -77,18 +79,19 @@ extern "C" int scanhash_nist5(int thr_id, uint32_t *pdata,
 	int throughput = opt_work_size ? opt_work_size : (1 << 20); // 256*4096
 	throughput = min(throughput, (int) (max_nonce - first_nonce));
 
-	static bool init[8] = {0,0,0,0,0,0,0,0};
 	if (!init[thr_id])
 	{
 		cudaSetDevice(device_map[thr_id]);
 
 		// Konstanten kopieren, Speicher belegen
-		cudaMalloc(&d_hash[thr_id], 16 * sizeof(uint32_t) * throughput);
 		quark_blake512_cpu_init(thr_id, throughput);
 		quark_groestl512_cpu_init(thr_id, throughput);
 		quark_jh512_cpu_init(thr_id, throughput);
 		quark_keccak512_cpu_init(thr_id, throughput);
 		quark_skein512_cpu_init(thr_id, throughput);
+
+		CUDA_SAFE_CALL(cudaMalloc(&d_hash[thr_id], 16 * sizeof(uint32_t) * throughput));
+
 		cuda_check_cpu_init(thr_id, throughput);
 		init[thr_id] = true;
 	}

fuguecoin.cpp

@@ -20,6 +20,8 @@ sph_fugue256_context  ctx_fugue_const[8];
     ((((x) << 24) & 0xff000000u) | (((x) << 8) & 0x00ff0000u)   | \
       (((x) >> 8) & 0x0000ff00u) | (((x) >> 24) & 0x000000ffu))
 
+static bool init[8] = { 0 };
+
 extern "C" int scanhash_fugue256(int thr_id, uint32_t *pdata, const uint32_t *ptarget,
 	uint32_t max_nonce, unsigned long *hashes_done)
 {
@@ -32,7 +34,6 @@ extern "C" int scanhash_fugue256(int thr_id, uint32_t *pdata, const uint32_t *pt
 		((uint32_t*)ptarget)[7] = 0xf;
 
 	// init
-	static bool init[8] = { false, false, false, false, false, false, false, false };
 	if(!init[thr_id])
 	{
 		fugue256_cpu_init(thr_id, throughPut);

groestlcoin.cpp

@@ -58,7 +58,7 @@ extern "C" void groestlhash(void *state, const void *input)
     memcpy(state, hashB, 32);
 }
 
-extern bool opt_benchmark;
+static bool init[8] = { 0 };
 
 extern "C" int scanhash_groestlcoin(int thr_id, uint32_t *pdata, const uint32_t *ptarget,
     uint32_t max_nonce, unsigned long *hashes_done)
@@ -73,7 +73,6 @@ extern "C" int scanhash_groestlcoin(int thr_id, uint32_t *pdata, const uint32_t
         ((uint32_t*)ptarget)[7] = 0x000000ff;
 
     // init
-    static bool init[8] = { false, false, false, false, false, false, false, false };
     if(!init[thr_id])
     {
         groestlcoin_cpu_init(thr_id, throughPut);

heavy/heavy.cu

@@ -134,9 +134,9 @@ int scanhash_heavy(int thr_id, uint32_t *pdata,
     const uint32_t *ptarget, uint32_t max_nonce,
     unsigned long *hashes_done, uint32_t maxvote, int blocklen)
 {
-    const uint32_t first_nonce = pdata[19]; /* to check */
+    const uint32_t first_nonce = pdata[19];
     // CUDA will process thousands of threads.
-    int throughput = opt_work_size ? opt_work_size : (1 << 19); // 256*2048
+    int throughput = opt_work_size ? opt_work_size : (1 << 19) - 256; // 256*2048
     throughput = min(throughput, (int)(max_nonce - first_nonce));
 
     int rc = 0;

keccak/keccak256.cu

@@ -34,6 +34,8 @@ extern "C" void keccak256_hash(void *state, const void *input)
 	memcpy(state, hash, 32);
 }
 
+static bool init[8] = { 0 };
+
 extern "C" int scanhash_keccak256(int thr_id, uint32_t *pdata,
 	const uint32_t *ptarget, uint32_t max_nonce,
 	unsigned long *hashes_done)
@@ -46,7 +48,6 @@ extern "C" int scanhash_keccak256(int thr_id, uint32_t *pdata,
 	int throughput = opt_work_size ? opt_work_size : (1 << 21); // 256*256*8*4
 	throughput = min(throughput, (int)(max_nonce - first_nonce));
 
-	static bool init[8] = {0,0,0,0,0,0,0,0};
 	if (!init[thr_id]) {
 		cudaSetDevice(device_map[thr_id]);
 

myriadgroestl.cpp

@@ -32,7 +32,7 @@ extern "C" void myriadhash(void *state, const void *input)
     memcpy(state, hashB, 32);
 }
 
-extern bool opt_benchmark;
+static bool init[8] = { 0 };
 
 extern "C" int scanhash_myriad(int thr_id, uint32_t *pdata, const uint32_t *ptarget,
 	uint32_t max_nonce, unsigned long *hashes_done)
@@ -51,7 +51,6 @@ extern "C" int scanhash_myriad(int thr_id, uint32_t *pdata, const uint32_t *ptar
 		((uint32_t*)ptarget)[7] = 0x0000ff;
 
 	// init
-	static bool init[8] = { false, false, false, false, false, false, false, false };
 	if(!init[thr_id])
 	{
 #if BIG_DEBUG

nvml.cpp

@@ -23,19 +23,16 @@
 #endif
 
 #include "miner.h"
+#include "nvml.h"
 #include "cuda_runtime.h"
 
 // cuda.cpp
 int cuda_num_devices();
 
-// geforce driver version
-char driver_version[32] = { 0 };
-
 #ifdef USE_WRAPNVML
 
-#include "nvml.h"
-
 extern wrap_nvml_handle *hnvml;
+extern char driver_version[32];
 
 static uint32_t device_bus_ids[8] = { 0 };
 
@@ -770,15 +767,3 @@ int gpu_info(struct cgpu_info *gpu)
 }
 
 #endif /* USE_WRAPNVML */
-
-int gpu_clocks(struct cgpu_info *gpu)
-{
-	cudaDeviceProp props;
-	if (cudaGetDeviceProperties(&props, gpu->gpu_id) == cudaSuccess) {
-		gpu->gpu_clock = props.clockRate;
-		gpu->gpu_memclock = props.memoryClockRate;
-		gpu->gpu_mem = props.totalGlobalMem;
-		return 0;
-	}
-	return -1;
-}

nvml.h

@@ -13,6 +13,9 @@
  * John E. Stone - john.stone@gmail.com
  *
  */
+#ifdef USE_WRAPNVML
+
+#include "miner.h"
 
 /*
  * Ugly hacks to avoid dependencies on the real nvml.h until it starts
@@ -130,17 +133,8 @@ int wrap_nvml_get_power_usage(wrap_nvml_handle *nvmlh,
                               int gpuindex,
                               unsigned int *milliwatts);
 
-/* nvapi functions */
-#ifdef WIN32
-int wrap_nvapi_init();
-#endif
-
 /* api functions */
 
-#include "miner.h"
-
-#ifdef USE_WRAPNVML
-
 int gpu_fanpercent(struct cgpu_info *gpu);
 float gpu_temp(struct cgpu_info *gpu);
 unsigned int gpu_power(struct cgpu_info *gpu);
@@ -151,7 +145,9 @@ int gpu_busid(struct cgpu_info *gpu);
 /* pid/vid, sn and bios rev */
 int gpu_info(struct cgpu_info *gpu);
 
+/* nvapi functions */
+#ifdef WIN32
+int wrap_nvapi_init();
 #endif
 
-// cuda api based
-int gpu_clocks(struct cgpu_info *gpu);
+#endif /* USE_WRAPNVML */

pentablake.cu

@@ -486,11 +486,12 @@ void pentablake_cpu_setBlock_80(uint32_t *pdata, const uint32_t *ptarget)
 	CUDA_SAFE_CALL(cudaMemcpyToSymbol(c_Target, ptarget, 32, 0, cudaMemcpyHostToDevice));
 }
 
+static bool init[8] = { 0 };
+
 extern "C" int scanhash_pentablake(int thr_id, uint32_t *pdata, const uint32_t *ptarget,
 	uint32_t max_nonce, unsigned long *hashes_done)
 {
 	const uint32_t first_nonce = pdata[19];
-	static bool init[8] = { 0, 0, 0, 0, 0, 0, 0, 0 };
 	uint32_t endiandata[20];
 	int rc = 0;
 	int throughput = opt_work_size ? opt_work_size : (128 * 2560); // 18.5

quark/animecoin.cu

@@ -158,12 +158,13 @@ struct HashPredicate
 };
 */
 
+static bool init[8] = { 0 };
+
 extern "C" int scanhash_anime(int thr_id, uint32_t *pdata,
     const uint32_t *ptarget, uint32_t max_nonce,
     unsigned long *hashes_done)
 {
 	const uint32_t first_nonce = pdata[19];
-	static bool init[8] = { 0 };
 	int throughput = opt_work_size ? opt_work_size : (1 << 19); // 256*2048
 	throughput = min(throughput, (int)(max_nonce - first_nonce));
 

quark/quarkcoin.cu

@@ -128,12 +128,13 @@ extern "C" void quarkhash(void *state, const void *input)
     memcpy(state, hash, 32);
 }
 
+static bool init[8] = { 0 };
+
 extern "C" int scanhash_quark(int thr_id, uint32_t *pdata,
     const uint32_t *ptarget, uint32_t max_nonce,
     unsigned long *hashes_done)
 {
 	const uint32_t first_nonce = pdata[19];
-	static bool init[8] = { 0 };
 
 	int throughput = opt_work_size ? opt_work_size : (1 << 20); // 256*4096
 	throughput = min(throughput, (int)(max_nonce - first_nonce));

qubit/deep.cu

@@ -52,13 +52,13 @@ extern "C" void deephash(void *state, const void *input)
 	memcpy(state, hash, 32);
 }
 
+static bool init[8] = { 0 };
 
 extern "C" int scanhash_deep(int thr_id, uint32_t *pdata,
 	const uint32_t *ptarget, uint32_t max_nonce,
 	unsigned long *hashes_done)
 {
 	const uint32_t first_nonce = pdata[19];
-	static bool init[8] = {0,0,0,0,0,0,0,0};
 	uint32_t endiandata[20];
 	int throughput = opt_work_size ? opt_work_size : (1 << 19); // 256*256*8
 	throughput = min(throughput, (int)(max_nonce - first_nonce));

qubit/doom.cu

@@ -32,13 +32,13 @@ extern void doomhash(void *state, const void *input)
 	memcpy(state, hash, 32);
 }
 
+static bool init[8] = { 0 };
 
 extern "C" int scanhash_doom(int thr_id, uint32_t *pdata,
 	const uint32_t *ptarget, uint32_t max_nonce,
 	unsigned long *hashes_done)
 {
 	const uint32_t first_nonce = pdata[19];
-	static bool init[8] = {0,0,0,0,0,0,0,0};
 	uint32_t endiandata[20];
 	int throughput = opt_work_size ? opt_work_size : (1 << 22); // 256*256*8*8
 	throughput = min(throughput, (int)(max_nonce - first_nonce));

qubit/qubit.cu

@@ -72,11 +72,12 @@ extern "C" void qubithash(void *state, const void *input)
 	memcpy(state, hash, 32);
 }
 
+static bool init[8] = { 0 };
+
 extern "C" int scanhash_qubit(int thr_id, uint32_t *pdata,
 	const uint32_t *ptarget, uint32_t max_nonce,
 	unsigned long *hashes_done)
 {
-	static bool init[8] = {0,0,0,0,0,0,0,0};
 	uint32_t endiandata[20];
 	const uint32_t first_nonce = pdata[19];
 	int throughput = opt_work_size ? opt_work_size : (1 << 19); // 256*256*8

x11/fresh.cu

@@ -68,12 +68,13 @@ extern "C" void fresh_hash(void *state, const void *input)
 	memcpy(state, hash, 32);
 }
 
+static bool init[8] = { 0 };
+
 extern "C" int scanhash_fresh(int thr_id, uint32_t *pdata,
 	const uint32_t *ptarget, uint32_t max_nonce,
 	unsigned long *hashes_done)
 {
 	const uint32_t first_nonce = pdata[19];
-	static bool init[8] = {0,0,0,0,0,0,0,0};
 	uint32_t endiandata[20];
 
 	int throughput = opt_work_size ? opt_work_size : (1 << 19); // 256*256*8;

x11/s3.cu

@@ -49,13 +49,14 @@ extern "C" void s3hash(void *output, const void *input)
 	memcpy(output, hash, 32);
 }
 
+static bool init[8] = { 0 };
+
 /* Main S3 entry point */
 extern "C" int scanhash_s3(int thr_id, uint32_t *pdata,
 	const uint32_t *ptarget, uint32_t max_nonce,
 	unsigned long *hashes_done)
 {
 	const uint32_t first_nonce = pdata[19];
-	static bool init[8] = { 0 };
 	int intensity = 20; // 256*256*8*2;
 #ifdef WIN32
 	// reduce by one the intensity on windows

x11/x11.cu

@@ -129,12 +129,13 @@ extern "C" void x11hash(void *output, const void *input)
 	memcpy(output, hash, 32);
 }
 
+static bool init[8] = { 0 };
+
 extern "C" int scanhash_x11(int thr_id, uint32_t *pdata,
     const uint32_t *ptarget, uint32_t max_nonce,
     unsigned long *hashes_done)
 {
 	const uint32_t first_nonce = pdata[19];
-	static bool init[8] = { 0 };
 	int intensity = (device_sm[device_map[thr_id]] >= 500 && !is_windows()) ? 20 : 19;
 	int throughput = opt_work_size ? opt_work_size : (1 << intensity); // 20=256*256*16;
 	throughput = min(throughput, (int)(max_nonce - first_nonce));

x13/x13.cu

@@ -144,13 +144,13 @@ extern "C" void x13hash(void *output, const void *input)
 	memcpy(output, hash, 32);
 }
 
+static bool init[8] = { 0 };
 
 extern "C" int scanhash_x13(int thr_id, uint32_t *pdata,
     const uint32_t *ptarget, uint32_t max_nonce,
     unsigned long *hashes_done)
 {
 	const uint32_t first_nonce = pdata[19];
-	static bool init[8] = { 0 };
 	int intensity = 19; // (device_sm[device_map[thr_id]] > 500 && !is_windows()) ? 20 : 19;
 	int throughput = opt_work_size ? opt_work_size : (1 << intensity); // 19=256*256*8;
 	throughput = min(throughput, (int)(max_nonce - first_nonce));

x15/whirlpool.cu

@@ -49,12 +49,13 @@ extern "C" void wcoinhash(void *state, const void *input)
 	memcpy(state, hash, 32);
 }
 
+static bool init[8] = { 0 };
+
 extern "C" int scanhash_whc(int thr_id, uint32_t *pdata,
     const uint32_t *ptarget, uint32_t max_nonce,
     unsigned long *hashes_done)
 {
 	const uint32_t first_nonce = pdata[19];
-	static bool init[8] = {0,0,0,0,0,0,0,0};
 	uint32_t endiandata[20];
 	int throughput = opt_work_size ? opt_work_size : (1 << 19); // 256*256*8;
 	throughput = min(throughput, (int)(max_nonce - first_nonce));

x15/x14.cu

@@ -155,13 +155,13 @@ extern "C" void x14hash(void *output, const void *input)
 	memcpy(output, hash, 32);
 }
 
+static bool init[8] = { 0 };
 
 extern "C" int scanhash_x14(int thr_id, uint32_t *pdata,
 	const uint32_t *ptarget, uint32_t max_nonce,
 	unsigned long *hashes_done)
 {
 	const uint32_t first_nonce = pdata[19];
-	static bool init[8] = { 0 };
 	uint32_t endiandata[20];
 	int throughput = opt_work_size ? opt_work_size : (1 << 19); // 256*256*8;
 	throughput = min(throughput, (int)(max_nonce - first_nonce));

x15/x15.cu

@@ -165,12 +165,13 @@ extern "C" void x15hash(void *output, const void *input)
 	memcpy(output, hash, 32);
 }
 
+static bool init[8] = { 0 };
+
 extern "C" int scanhash_x15(int thr_id, uint32_t *pdata,
 	const uint32_t *ptarget, uint32_t max_nonce,
 	unsigned long *hashes_done)
 {
 	const uint32_t first_nonce = pdata[19];
-	static bool init[8] = { 0 };
 	uint32_t endiandata[20];
 
 	int throughput = opt_work_size ? opt_work_size : (1 << 19); // 256*256*8;

x17/x17.cu

@@ -184,13 +184,13 @@ extern "C" void x17hash(void *output, const void *input)
 	memcpy(output, hash, 32);
 }
 
+static bool init[8] = { 0 };
 
 extern "C" int scanhash_x17(int thr_id, uint32_t *pdata,
 	const uint32_t *ptarget, uint32_t max_nonce,
 	unsigned long *hashes_done)
 {
 	const uint32_t first_nonce = pdata[19];
-	static bool init[8] = { 0 };
 	int throughput = opt_work_size ? opt_work_size : (1 << 19); // 256*256*8;
 	throughput = min(throughput, (int)(max_nonce - first_nonce));