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Do the dynamic timing in opencl code over a single pass through scanhash to make sure we're only getting opencl times contributing to the measured intervals.

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This commit is contained in:
Con Kolivas 2012-08-20 14:52:06 +10:00
parent 08948e02f3
commit e5ed708493
1 changed files with 43 additions and 44 deletions
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131
driver-opencl.c
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@ -1460,6 +1460,10 @@ static void opencl_free_work(struct thr_info *thr, struct work *work)
const int thr_id = thr->id;
struct opencl_thread_data *thrdata = thr->cgpu_data;
_clState *clState = clStates[thr_id];
struct cgpu_info *gpu = thr->cgpu;
if (gpu->dynamic)
return;
clFinish(clState->commandQueue);
if (thrdata->res[FOUND]) {
@ -1491,7 +1495,6 @@ static int64_t opencl_scanhash(struct thr_info *thr, struct work *work,
const cl_kernel *kernel = &clState->kernel;
const int dynamic_us = opt_dynamic_interval * 1000;
struct timeval tv_gpuend;
cl_bool blocking;
cl_int status;
size_t globalThreads[1];
@ -1499,18 +1502,73 @@ static int64_t opencl_scanhash(struct thr_info *thr, struct work *work,
unsigned int threads;
int64_t hashes;
if (gpu->dynamic)
blocking = CL_TRUE;
else
blocking = CL_FALSE;
/* This finish flushes the readbuffer set with CL_FALSE later */
if (!blocking)
if (!gpu->dynamic)
clFinish(clState->commandQueue);
set_threads_hashes(clState->vwidth, &threads, &hashes, globalThreads,
localThreads[0], gpu->intensity);
if (hashes > gpu->max_hashes)
gpu->max_hashes = hashes;
/* MAXBUFFERS entry is used as a flag to say nonces exist */
if (thrdata->res[FOUND]) {
/* Clear the buffer again */
status = clEnqueueWriteBuffer(clState->commandQueue, clState->outputBuffer, CL_FALSE, 0,
BUFFERSIZE, blank_res, 0, NULL, NULL);
if (unlikely(status != CL_SUCCESS)) {
applog(LOG_ERR, "Error: clEnqueueWriteBuffer failed.");
return -1;
}
if (unlikely(thrdata->last_work)) {
applog(LOG_DEBUG, "GPU %d found something in last work?", gpu->device_id);
postcalc_hash_async(thr, thrdata->last_work, thrdata->res);
thrdata->last_work = NULL;
} else {
applog(LOG_DEBUG, "GPU %d found something?", gpu->device_id);
postcalc_hash_async(thr, work, thrdata->res);
}
memset(thrdata->res, 0, BUFFERSIZE);
clFinish(clState->commandQueue);
}
gettimeofday(&gpu->tv_gpumid, NULL);
if (!gpu->intervals) {
gpu->tv_gpustart.tv_sec = gpu->tv_gpumid.tv_sec;
gpu->tv_gpustart.tv_usec = gpu->tv_gpumid.tv_usec;
}
status = thrdata->queue_kernel_parameters(clState, &work->blk, globalThreads[0]);
if (unlikely(status != CL_SUCCESS)) {
applog(LOG_ERR, "Error: clSetKernelArg of all params failed.");
return -1;
}
if (clState->goffset) {
size_t global_work_offset[1];
global_work_offset[0] = work->blk.nonce;
status = clEnqueueNDRangeKernel(clState->commandQueue, *kernel, 1, global_work_offset,
globalThreads, localThreads, 0, NULL, NULL);
} else
status = clEnqueueNDRangeKernel(clState->commandQueue, *kernel, 1, NULL,
globalThreads, localThreads, 0, NULL, NULL);
if (unlikely(status != CL_SUCCESS)) {
applog(LOG_ERR, "Error %d: Enqueueing kernel onto command queue. (clEnqueueNDRangeKernel)", status);
return -1;
}
status = clEnqueueReadBuffer(clState->commandQueue, clState->outputBuffer, CL_FALSE, 0,
BUFFERSIZE, thrdata->res, 0, NULL, NULL);
if (unlikely(status != CL_SUCCESS)) {
applog(LOG_ERR, "Error: clEnqueueReadBuffer failed error %d. (clEnqueueReadBuffer)", status);
return -1;
}
if (gpu->dynamic) {
double gpu_us;
clFinish(clState->commandQueue);
/* Windows returns the same time for gettimeofday due to its
* 15ms timer resolution, so we must average the result over
* at least 5 values that are actually different to get an
@ -1535,65 +1593,6 @@ static int64_t opencl_scanhash(struct thr_info *thr, struct work *work,
gpu->intervals = gpu->hit = 0;
}
}
set_threads_hashes(clState->vwidth, &threads, &hashes, globalThreads,
localThreads[0], gpu->intensity);
if (hashes > gpu->max_hashes)
gpu->max_hashes = hashes;
status = thrdata->queue_kernel_parameters(clState, &work->blk, globalThreads[0]);
if (unlikely(status != CL_SUCCESS)) {
applog(LOG_ERR, "Error: clSetKernelArg of all params failed.");
return -1;
}
/* MAXBUFFERS entry is used as a flag to say nonces exist */
if (thrdata->res[FOUND]) {
/* Clear the buffer again */
status = clEnqueueWriteBuffer(clState->commandQueue, clState->outputBuffer, blocking, 0,
BUFFERSIZE, blank_res, 0, NULL, NULL);
if (unlikely(status != CL_SUCCESS)) {
applog(LOG_ERR, "Error: clEnqueueWriteBuffer failed.");
return -1;
}
if (unlikely(thrdata->last_work)) {
applog(LOG_DEBUG, "GPU %d found something in last work?", gpu->device_id);
postcalc_hash_async(thr, thrdata->last_work, thrdata->res);
thrdata->last_work = NULL;
} else {
applog(LOG_DEBUG, "GPU %d found something?", gpu->device_id);
postcalc_hash_async(thr, work, thrdata->res);
}
memset(thrdata->res, 0, BUFFERSIZE);
if (!blocking)
clFinish(clState->commandQueue);
}
gettimeofday(&gpu->tv_gpumid, NULL);
if (!gpu->intervals) {
gpu->tv_gpustart.tv_sec = gpu->tv_gpumid.tv_sec;
gpu->tv_gpustart.tv_usec = gpu->tv_gpumid.tv_usec;
}
if (clState->goffset) {
size_t global_work_offset[1];
global_work_offset[0] = work->blk.nonce;
status = clEnqueueNDRangeKernel(clState->commandQueue, *kernel, 1, global_work_offset,
globalThreads, localThreads, 0, NULL, NULL);
} else
status = clEnqueueNDRangeKernel(clState->commandQueue, *kernel, 1, NULL,
globalThreads, localThreads, 0, NULL, NULL);
if (unlikely(status != CL_SUCCESS)) {
applog(LOG_ERR, "Error %d: Enqueueing kernel onto command queue. (clEnqueueNDRangeKernel)", status);
return -1;
}
status = clEnqueueReadBuffer(clState->commandQueue, clState->outputBuffer, blocking, 0,
BUFFERSIZE, thrdata->res, 0, NULL, NULL);
if (unlikely(status != CL_SUCCESS)) {
applog(LOG_ERR, "Error: clEnqueueReadBuffer failed error %d. (clEnqueueReadBuffer)", status);
return -1;
}
/* The amount of work scanned can fluctuate when intensity changes
* and since we do this one cycle behind, we increment the work more