198 lines
6.8 KiB
Plaintext
198 lines
6.8 KiB
Plaintext
/***************************************************************************************************
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* Copyright (c) 2017-2020, NVIDIA CORPORATION. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification, are permitted
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* provided that the following conditions are met:
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* * Redistributions of source code must retain the above copyright notice, this list of
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* conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright notice, this list of
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* conditions and the following disclaimer in the documentation and/or other materials
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* provided with the distribution.
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* * Neither the name of the NVIDIA CORPORATION nor the names of its contributors may be used
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* to endorse or promote products derived from this software without specific prior written
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* permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL NVIDIA CORPORATION BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TOR (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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**************************************************************************************************/
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/*! \file
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\brief Statically sized array of elements that accommodates all CUTLASS-supported numeric types
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and is safe to use in a union.
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*/
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#include "../common/cutlass_unit_test.h"
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#include "cutlass/array.h"
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#include "cutlass/numeric_types.h"
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#include "cutlass/numeric_conversion.h"
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#include "cutlass/util/device_memory.h"
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/////////////////////////////////////////////////////////////////////////////////////////////////
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//
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// Host
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//
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/////////////////////////////////////////////////////////////////////////////////////////////////
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TEST(tfloat32_t, host_conversion) {
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for (int i = -1024; i < 1024; ++i) {
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float f = static_cast<float>(i);
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cutlass::tfloat32_t x = static_cast<cutlass::tfloat32_t>(i);
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cutlass::tfloat32_t y = static_cast<cutlass::tfloat32_t>(f);
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EXPECT_TRUE(static_cast<int>(x) == i);
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EXPECT_TRUE(static_cast<float>(y) == f);
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}
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// Try out user-defined literals
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EXPECT_TRUE(cutlass::tfloat32_t(7) == 7_tf32);
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EXPECT_TRUE(7 == static_cast<int>(7_tf32));
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}
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TEST(tfloat32_t, host_arithmetic) {
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for (int i = -100; i < 100; ++i) {
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for (int j = -100; j < 100; ++j) {
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cutlass::tfloat32_t x = static_cast<cutlass::tfloat32_t>(i);
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cutlass::tfloat32_t y = static_cast<cutlass::tfloat32_t>(j);
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EXPECT_TRUE(static_cast<int>(x + y) == (i + j));
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}
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}
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}
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TEST(tfloat32_t, host_round_nearest) {
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struct {
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uint32_t f32_bits;
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uint32_t expected;
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} tests[] = {
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{0x40000000, 0x40000000}, // M=0, R=0, S=0 => rtz
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{0x40001000, 0x40000000}, // M=0, R=1, S=0 => rtz
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{0x40000001, 0x40000000}, // M=0, R=0, S=1 => rtz
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{0x40001001, 0x40002000}, // M=0, R=1, S=1 => +inf
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{0x40002000, 0x40002000}, // M=1, R=0, S=0 => rtz
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{0x40002001, 0x40002000}, // M=1, R=0, S=1 => rtz
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{0x40003000, 0x40004000}, // M=1, R=1, S=0 => +inf
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{0x40003001, 0x40004000}, // M=1, R=1, S=1 => +inf
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{0x7f800000, 0x7f800000}, // +inf
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{0xff800000, 0xff800000}, // -inf
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{0x7fffffff, 0x7fffffff}, // canonical NaN to canonical NaN
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{0x7f800001, 0x7fffffff}, // NaN to canonical NaN
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{0xff800001, 0x7fffffff}, // NaN to canonical NaN
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{0, 0}
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};
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bool running = true;
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for (int i = 0; running; ++i) {
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float f32 = reinterpret_cast<float const &>(tests[i].f32_bits);
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cutlass::NumericConverter<
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cutlass::tfloat32_t,
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float,
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cutlass::FloatRoundStyle::round_to_nearest> converter;
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cutlass::tfloat32_t tf32 = converter(f32);
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// note, we must explicitly truncate the low-order bits since they are not defined in TF32.
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if (cutlass::isfinite(tf32)) {
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tf32.storage &= 0xffffe000;
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}
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bool passed = (tests[i].expected == tf32.raw());
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EXPECT_TRUE(passed)
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<< "Error - convert(f32: 0x" << std::hex << tests[i].f32_bits
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<< ") -> 0x" << std::hex << tests[i].expected << "\ngot: 0x" << std::hex << tf32.raw();
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if (!tests[i].f32_bits) {
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running = false;
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}
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}
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}
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namespace test {
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namespace core {
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__global__ void convert_tf32_half_ulp(cutlass::tfloat32_t *out, float const *in) {
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cutlass::NumericConverter<
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cutlass::tfloat32_t,
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float,
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cutlass::FloatRoundStyle::round_half_ulp_truncate> convert;
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*out = convert(*in);
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}
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}
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}
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TEST(tfloat32_t, host_round_half_ulp) {
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struct {
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uint32_t f32_bits;
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uint32_t expected;
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} tests[] = {
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{0x40001fff, 0x40002000},
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{0x40000000, 0x40000000}, // M=0, R=0, S=0 => rtz
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{0x40001000, 0x40002000}, // M=0, R=1, S=0 => rtz - this difers from RNE
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{0x40000001, 0x40000000}, // M=0, R=0, S=1 => rtz
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{0x40001001, 0x40002000}, // M=0, R=1, S=1 => +inf
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{0x40002000, 0x40002000}, // M=1, R=0, S=0 => rtz
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{0x40002001, 0x40002000}, // M=1, R=0, S=1 => rtz
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{0x40003000, 0x40004000}, // M=1, R=1, S=0 => +inf
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{0x40003001, 0x40004000}, // M=1, R=1, S=1 => +inf
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{0x7f800000, 0x7f800000}, // +inf
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{0xff800000, 0xff800000}, // -inf
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{0x7fffffff, 0x7fffffff}, // canonical NaN to canonical NaN
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{0x7f800001, 0x7f800001}, // NaN to NaN
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{0xff800001, 0xff800001}, // NaN to NaN
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{0, 0}
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};
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cutlass::NumericConverter<
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cutlass::tfloat32_t,
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float,
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cutlass::FloatRoundStyle::round_half_ulp_truncate> convert;
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bool running = true;
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for (int i = 0; running; ++i) {
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float f32 = reinterpret_cast<float const &>(tests[i].f32_bits);
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cutlass::tfloat32_t tf32 = convert(f32);
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// note, for this test, we must explicitly truncate the low-order bits since they are not
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// defined in TF32.
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if (cutlass::isfinite(tf32)) {
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tf32.storage &= 0xffffe000;
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}
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bool passed = (tests[i].expected == tf32.raw());
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EXPECT_TRUE(passed)
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<< "Error - convert(f32: 0x" << std::hex << tests[i].f32_bits
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<< ") -> 0x" << std::hex << tests[i].expected << "\ngot: 0x" << std::hex << tf32.raw();
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if (!tests[i].f32_bits) {
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running = false;
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}
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}
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}
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/////////////////////////////////////////////////////////////////////////////////////////////////
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//
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// Device
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//
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/////////////////////////////////////////////////////////////////////////////////////////////////
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