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Get rid of thread limit for bitsliced kernels

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This commit is contained in:
Jens Steube 2018-02-18 11:10:33 +01:00
parent 7b165a86a9
commit 872f82ab8d
2 changed files with 18 additions and 16 deletions
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26
src/interface.c
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@ -25957,17 +25957,6 @@ u32 hashconfig_forced_kernel_threads (hashcat_ctx_t *hashcat_ctx)
u32 kernel_threads = 0;
// DES kernels needs to have a minimum thread count only
// because of the bitsliced kernel and the workgroup division done on it
if (hashconfig->hash_mode == 1500) kernel_threads = 64; // DES
if (hashconfig->hash_mode == 3000) kernel_threads = 64; // DES
if (hashconfig->hash_mode == 3100) kernel_threads = 64; // DES
if (hashconfig->hash_mode == 8500) kernel_threads = 64; // DES
if (hashconfig->hash_mode == 14000) kernel_threads = 64; // DES
if (hashconfig->hash_mode == 14100) kernel_threads = 64; // DES
if (hashconfig->hash_mode == 16000) kernel_threads = 64; // DES
// this should have a kernel hint attribute in the kernel files
// __attribute__((reqd_work_group_size(X, 1, 1)))
@ -25992,6 +25981,7 @@ u32 hashconfig_forced_kernel_threads (hashcat_ctx_t *hashcat_ctx)
u32 hashconfig_get_kernel_threads (hashcat_ctx_t *hashcat_ctx, const hc_device_param_t *device_param)
{
const hashconfig_t *hashconfig = hashcat_ctx->hashconfig;
const user_options_t *user_options = hashcat_ctx->user_options;
// a kernel can force a fixed value
@ -25999,9 +25989,19 @@ u32 hashconfig_get_kernel_threads (hashcat_ctx_t *hashcat_ctx, const hc_device_p
if (forced_kernel_threads) return forced_kernel_threads;
// for CPU we just do 1
// for CPU we just do 1 ...
if (device_param->device_type & CL_DEVICE_TYPE_CPU) return 1;
if (device_param->device_type & CL_DEVICE_TYPE_CPU)
{
// ... as long as it is not a bitsliced kernel, as they have a fixed 2nd dimension size of 32 in run_kernel
if ((hashconfig->opts_type & OPTS_TYPE_PT_BITSLICE) && (user_options->attack_mode == ATTACK_MODE_BF))
{
return 32;
}
return 1;
}
// this is an upper limit, a good start, since our strategy is to reduce thread counts only

6
src/opencl.c
View File

@ -3947,9 +3947,11 @@ static int get_kernel_wgs (hashcat_ctx_t *hashcat_ctx, hc_device_param_t *device
if (CL_rc == -1) return -1;
if (compile_work_group_size[0] > 0)
const size_t cwgs_total = compile_work_group_size[0] * compile_work_group_size[1] * compile_work_group_size[2];
if (cwgs_total > 0)
{
kernel_threads = MIN (kernel_threads, (u32) compile_work_group_size[0]);
kernel_threads = MIN (kernel_threads, (u32) cwgs_total);
}
*result = kernel_threads;