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prepare scrypt tmto value for manual tuning

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This commit is contained in:
jsteube 2015-12-28 09:20:18 +01:00
parent 94d6fd3693
commit a78173af7e
1 changed files with 45 additions and 9 deletions
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54
src/oclHashcat.c
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@ -12991,26 +12991,62 @@ int main (int argc, char **argv)
if ((hash_mode == 8900) || (hash_mode == 9300))
{
uint tmto_start = 2;
uint tmto_stop = 1024;
uint tmto_start = 0;
uint tmto_stop = 10;
if (scrypt_tmto)
{
tmto_start = 1 << scrypt_tmto;
tmto_stop = tmto_start + 1;
tmto_start = scrypt_tmto;
}
else
{
// in case the user did not specify the tmto manually
// use some values known to run best (tested on 290x for AMD and 980ti for NV)
// but set the lower end only in case the user has a gpu with too less memory
if (hash_mode == 8900)
{
if (vendor_id == VENDOR_ID_AMD)
{
}
else if (vendor_id == VENDOR_ID_NV)
{
}
}
else if (hash_mode == 9300)
{
if (vendor_id == VENDOR_ID_AMD)
{
}
else if (vendor_id == VENDOR_ID_NV)
{
}
}
}
for (uint tmto = tmto_start; tmto < tmto_stop; tmto <<= 1)
if (quiet == 0) log_info ("");
for (uint tmto = tmto_start; tmto < tmto_stop; tmto++)
{
// todo -- make sure all salts get the new tmto value
// TODO: in theory the following calculation needs to be done per salt, not global
// we assume all hashes have the same scrypt settings
size_scryptV = (128 * data.salts_buf[0].scrypt_r) * data.salts_buf[0].scrypt_N;
size_scryptV /= tmto;
size_scryptV /= 1 << tmto;
size_scryptV *= gpu_processors * gpu_processor_cores * gpu_threads;
if (size_scryptV > device_param->gpu_maxmem_alloc) continue;
if (size_scryptV > device_param->gpu_maxmem_alloc)
{
if (quiet == 0) log_info ("WARNING: not enough GPU memory free for allocation to use --scrypt-tmto %d, increasing...", tmto);
continue;
}
for (uint salts_pos = 0; salts_pos < data.salts_cnt; salts_pos++)
{
@ -13142,7 +13178,7 @@ int main (int argc, char **argv)
}
else if (force_jit_compilation == 8900)
{
sprintf (build_opts, "%s -DSCRYPT_N=%d -DSCRYPT_R=%d -DSCRYPT_P=%d -DSCRYPT_TMTO=%d", build_opts, data.salts_buf[0].scrypt_N, data.salts_buf[0].scrypt_r, data.salts_buf[0].scrypt_p, data.salts_buf[0].scrypt_tmto);
sprintf (build_opts, "%s -DSCRYPT_N=%d -DSCRYPT_R=%d -DSCRYPT_P=%d -DSCRYPT_TMTO=%d", build_opts, data.salts_buf[0].scrypt_N, data.salts_buf[0].scrypt_r, data.salts_buf[0].scrypt_p, 1 << data.salts_buf[0].scrypt_tmto);
}
hc_clBuildProgram (device_param->program, 1, &device_param->device, build_opts, NULL, NULL);