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Add OPTS_TYPE_NATIVE_THREADS for use by plugin developer to enforce native thread count (useful for scrypt)

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This commit is contained in:
Jens Steube 2021-04-14 15:22:30 +02:00
parent 67d189e10a
commit ff96015f53
2 changed files with 57 additions and 0 deletions
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1
include/types.h
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@ -435,6 +435,7 @@ typedef enum opts_type
OPTS_TYPE_DYNAMIC_SHARED = (1ULL << 48), // use dynamic shared memory (note: needs special kernel changes)
OPTS_TYPE_SELF_TEST_DISABLE = (1ULL << 49), // some algos use JiT in combinations with a salt or create too much startup time
OPTS_TYPE_MP_MULTI_DISABLE = (1ULL << 50), // do not multiply the kernel-accel with the multiprocessor count per device to allow more fine-tuned workload settings
OPTS_TYPE_NATIVE_THREADS = (1ULL << 51), // forces "native" thread count: CPU=1, GPU-Intel=8, GPU-AMD=64 (wavefront), GPU-NV=32 (warps)
} opts_type_t;

56
src/backend.c
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@ -8166,6 +8166,62 @@ int backend_session_begin (hashcat_ctx_t *hashcat_ctx)
const u32 device_processors = device_param->device_processors;
if (hashconfig->opts_type & OPTS_TYPE_MP_MULTI_DISABLE)
{
u32 native_accel = device_processors;
if ((native_accel >= device_param->kernel_accel_min) && (native_accel <= device_param->kernel_accel_max))
{
device_param->kernel_accel_min = native_accel;
device_param->kernel_accel_max = native_accel;
}
}
/**
* device threads
*/
if (hashconfig->opts_type & OPTS_TYPE_NATIVE_THREADS)
{
u32 native_threads = 0;
if (device_param->opencl_device_type & CL_DEVICE_TYPE_CPU)
{
native_threads = 1;
}
else if (device_param->opencl_device_type & CL_DEVICE_TYPE_GPU)
{
// for GPU we need to distinguish by vendor
if (device_param->opencl_device_vendor_id == VENDOR_ID_INTEL_SDK)
{
native_threads = 8;
}
else if (device_param->opencl_device_vendor_id == VENDOR_ID_AMD)
{
native_threads = 64;
}
else
{
native_threads = 32;
}
}
else
{
// abort?
}
if ((native_threads >= device_param->kernel_threads_min) && (native_threads <= device_param->kernel_threads_max))
{
device_param->kernel_threads_min = native_threads;
device_param->kernel_threads_max = native_threads;
}
else
{
// abort?
}
}
/**
* create context for each device
*/