derek.holloway
7502bf64a4
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60 lines
2.1 KiB
C
60 lines
2.1 KiB
C
/*
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* Copyright (c) Advanced Micro Devices, Inc., or its affiliates.
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*
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* SPDX-License-Identifier: MIT
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*/
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static const char* global_atomics_sum_reduction_all_to_zero =
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"#pragma OPENCL EXTENSION cl_khr_global_int32_base_atomics : enable\n"
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" __kernel void global_atomics_sum_reduction_all_to_zero(uint "
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"ItemsPerThread, __global uint *Input, __global atomic_int *Output )\n"
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"{\n"
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" uint sum = 0;\n"
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" const uint msk = (uint)3;\n"
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" const uint shft = (uint)8;\n"
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" \n"
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" uint tid = get_global_id(0);\n"
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" uint Stride = get_global_size(0);\n"
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" for( int i = 0; i < ItemsPerThread; i++)\n"
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" {\n"
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" uint data = Input[tid];\n"
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" sum += data & msk;\n"
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" data = data >> shft;"
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" sum += data & msk;\n"
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" data = data >> shft;"
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" sum += data & msk;\n"
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" data = data >> shft;"
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" sum += data & msk;\n"
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" tid += Stride;\n"
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" }\n"
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" atomic_fetch_add_explicit( &(Output[0]), sum, memory_order_relaxed, "
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"memory_scope_device);\n"
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"}\n";
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static const char* global_atomics_sum_reduction_workgroup =
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"#pragma OPENCL EXTENSION cl_khr_global_int32_base_atomics : enable\n"
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" __kernel void global_atomics_sum_reduction_workgroup(uint "
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"ItemsPerThread, __global uint *Input, __global atomic_int *Output )\n"
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"{\n"
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" uint sum = 0;\n"
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" const uint msk = (uint)3;\n"
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" const uint shft = (uint)8;\n"
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" \n"
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" uint tid = get_global_id(0);\n"
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" uint Stride = get_global_size(0);\n"
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" for( int i = 0; i < ItemsPerThread; i++)\n"
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" {\n"
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" uint data = Input[tid];\n"
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" sum += data & msk;\n"
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" data = data >> shft;"
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" sum += data & msk;\n"
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" data = data >> shft;"
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" sum += data & msk;\n"
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" data = data >> shft;"
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" sum += data & msk;\n"
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" tid += Stride;\n"
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" }\n"
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" atomic_fetch_add_explicit( &(Output[get_group_id(0)]), sum, "
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"memory_order_relaxed, memory_scope_device);\n"
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"}\n";
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