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skein: fix wrong hashes seen on x11 with cuda 7

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Look like a stream synch problem, not related to cuda 7 headers or cudart

The threadfence() added doesnt changes performances, and could also
be related to the random cpu validation errors... so keep it for all.

Note: the 80-bytes variant used in skein2 doesn't seems affected.
This commit is contained in:
Tanguy Pruvot 2015-05-29 11:43:21 +02:00
parent 123fe287b6
commit 0224d4705e
1 changed files with 16 additions and 6 deletions
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22
quark/cuda_skein512.cu
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@ -418,13 +418,19 @@ void quark_skein512_gpu_hash_64(uint32_t threads, uint32_t startNounce, uint64_t
h7 = vectorize(0xAE18A40B660FCC33ull);
uint2 p[8];
// 1. Runde -> etype = 480, ptr = 64, bcount = 0, data = msg
// 1st Round -> etype = 480, ptr = 64, bcount = 0, data = msg
#pragma unroll 8
for (int i = 0; i < 8; i++)
p[i] = vectorize(inpHash[i]);
t0 = vectorize(64); // ptr
t1 = vectorize(480ull << 55); // etype
// t1 = vectorize(480ull << 55); // etype
t1 = vectorize(0xf000000000000000ULL);
//#if CUDA_VERSION >= 7000
// doesnt really affect x11 perfs.
__threadfence();
//#endif
TFBIG_KINIT_UI2(h0, h1, h2, h3, h4, h5, h6, h7, h8, t0, t1, t2);
TFBIG_4e_UI2(0);
TFBIG_4o_UI2(1);
@ -458,10 +464,12 @@ void quark_skein512_gpu_hash_64(uint32_t threads, uint32_t startNounce, uint64_t
// 2. Runde -> etype = 510, ptr = 8, bcount = 0, data = 0
#pragma unroll 8
for(int i=0; i<8; i++)
p[i] = vectorize(0ull);
p[i] = vectorize(0);
t0 = vectorize(8); // ptr
t1 = vectorize(510ull << 55); // etype
//t1 = vectorize(510ull << 55); // etype
t1 = vectorize(0xff00000000000000ULL);
TFBIG_KINIT_UI2(h0, h1, h2, h3, h4, h5, h6, h7, h8, t0, t1, t2);
TFBIG_4e_UI2(0);
TFBIG_4o_UI2(1);
@ -523,7 +531,9 @@ void quark_skein512_gpu_hash_64_sm3(uint32_t threads, uint32_t startNounce, uint
p[i] = inpHash[i];
t0 = 64; // ptr
t1 = 480ull << 55; // etype
// t1 = 480ull << 55; // etype
t1 = 0xf000000000000000ULL;
TFBIG_KINIT(h0, h1, h2, h3, h4, h5, h6, h7, h8, t0, t1, t2);
TFBIG_4e(0);
TFBIG_4o(1);
@ -880,7 +890,7 @@ void quark_skein512_cpu_hash_64(int thr_id, uint32_t threads, uint32_t startNoun
int dev_id = device_map[thr_id];
// uint2 uint64 variants for SM 3.2+
if (device_sm[dev_id] > 300 && cuda_arch[dev_id] > 300 && CUDA_VERSION < 7000)
if (device_sm[dev_id] > 300 && cuda_arch[dev_id] > 300)
quark_skein512_gpu_hash_64 <<<grid, block>>> (threads, startNounce, (uint64_t*)d_hash, d_nonceVector);
else
quark_skein512_gpu_hash_64_sm3 <<<grid, block>>> (threads, startNounce, (uint64_t*)d_hash, d_nonceVector);