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lbry: new share diff and duplicate fix

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when 2 nonces were found, the next scan was not at the right value

Doesn't really affect mining performance...
This commit is contained in:
Tanguy Pruvot 2016-09-27 09:25:11 +02:00
parent 9eead77027
commit 6f6cf966f8
1 changed files with 20 additions and 9 deletions
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29
lbry/lbry.cu
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@ -150,35 +150,46 @@ extern "C" int scanhash_lbry(int thr_id, struct work *work, uint32_t max_nonce,
uint32_t resNonces[2] = { UINT32_MAX, UINT32_MAX };
cudaMemcpy(resNonces, d_resNonce[thr_id], 2 * sizeof(uint32_t), cudaMemcpyDeviceToHost);
*hashes_done = pdata[LBC_NONCE_OFT32] - first_nonce + throughput;
if (resNonces[0] != UINT32_MAX)
{
const uint32_t startNonce = pdata[LBC_NONCE_OFT32];
resNonces[0] += startNonce;
endiandata[LBC_NONCE_OFT32] = swab32_if(resNonces[0], !swap);
lbry_hash(vhash, endiandata);
if (vhash[7] <= ptarget[7] && fulltest(vhash, ptarget)) {
int res = 1;
*hashes_done = pdata[LBC_NONCE_OFT32] - first_nonce + throughput;
work->nonces[0] = swab32_if(resNonces[0], swap);
work_set_target_ratio(work, vhash);
work->valid_nonces = 1;
if (resNonces[1] != UINT32_MAX) {
resNonces[1] += startNonce;
if (opt_debug)
gpulog(LOG_BLUE, thr_id, "Found second nonce %08x", swab32(resNonces[1]));
gpulog(LOG_DEBUG, thr_id, "second nonce %08x", swab32(resNonces[1]));
endiandata[LBC_NONCE_OFT32] = swab32_if(resNonces[1], !swap);
lbry_hash(vhash, endiandata);
work->nonces[1] = swab32_if(resNonces[1], swap);
if (bn_hash_target_ratio(vhash, ptarget) > work->shareratio[0]) {
// best first
xchg(work->nonces[1], work->nonces[0]);
work->sharediff[1] = work->sharediff[0];
work->shareratio[1] = work->shareratio[0];
work_set_target_ratio(work, vhash);
xchg(work->nonces[0], work->nonces[1]);
work->valid_nonces++;
} else {
bn_set_target_ratio(work, vhash, 1);
work->valid_nonces++;
}
res++;
}
pdata[LBC_NONCE_OFT32] = work->nonces[0];
return res;
pdata[LBC_NONCE_OFT32] = max(work->nonces[0], work->nonces[1]); // next scan start
return work->valid_nonces;
} else if (vhash[7] > ptarget[7]) {
gpulog(LOG_WARNING, thr_id, "result for %08x does not validate on CPU %08x > %08x!", resNonces[0], vhash[7], ptarget[7]);
cudaMemset(d_resNonce[thr_id], 0xFF, 2 * sizeof(uint32_t));