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Adjust opencl intensity when adjusting thread count to prevent it getting pegged at a value below the minimum threads possible.

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This commit is contained in:
Con Kolivas 2012-08-31 09:13:19 +10:00
parent f97bf2e2ac
commit f1c6ae22f7
1 changed files with 17 additions and 16 deletions
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33
driver-opencl.c
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@ -1106,20 +1106,23 @@ static cl_int queue_scrypt_kernel(_clState *clState, dev_blk_ctx *blk, __maybe_u
}
#endif
static void set_threads_hashes(unsigned int vectors, unsigned int *threads,
int64_t *hashes, size_t *globalThreads,
unsigned int minthreads, int intensity)
static void set_threads_hashes(unsigned int vectors,int64_t *hashes, size_t *globalThreads,
unsigned int minthreads, __maybe_unused int *intensity)
{
if (opt_scrypt) {
if (intensity < 0)
intensity = 0;
*threads = 1 << intensity;
} else
*threads = 1 << (15 + intensity);
if (*threads < minthreads)
*threads = minthreads;
*globalThreads = *threads;
*hashes = *threads * vectors;
unsigned int threads = 0;
while (threads < minthreads) {
threads = 1 << ((opt_scrypt ? 0 : 15) + *intensity);
if (threads < minthreads) {
if (likely(*intensity < MAX_INTENSITY))
(*intensity)++;
else
threads = minthreads;
}
}
*globalThreads = threads;
*hashes = threads * vectors;
}
#endif /* HAVE_OPENCL */
@ -1499,15 +1502,13 @@ static int64_t opencl_scanhash(struct thr_info *thr, struct work *work,
cl_int status;
size_t globalThreads[1];
size_t localThreads[1] = { clState->wsize };
unsigned int threads;
int64_t hashes;
/* This finish flushes the readbuffer set with CL_FALSE later */
if (!gpu->dynamic)
clFinish(clState->commandQueue);
set_threads_hashes(clState->vwidth, &threads, &hashes, globalThreads,
localThreads[0], gpu->intensity);
set_threads_hashes(clState->vwidth, &hashes, globalThreads, localThreads[0], &gpu->intensity);
if (hashes > gpu->max_hashes)
gpu->max_hashes = hashes;