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193 lines (177 loc) · 9.33 KB
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#include "common.h"
int *c;
//const int BUFFER_SIZE = 4 * 1024 * 1024; // in bytes
const int BUFFER_SIZE = 1024 * 1024; // in bytes
void Setup() {
Timer t;
// allocate array
c = (int*)aligned_alloc( 64, BUFFER_SIZE );
printf( "Setup took %fms\n", t.elapsed() );
}
template<typename T, size_t NumToParallelModify>
void TestParallelModifyTemplate() {
T *modify_buffer_ptr = (T*)(void*)c;
T temp[NumToParallelModify];
const size_t TOTAL_ELEMENTS = BUFFER_SIZE / sizeof(T);
for( size_t i = 0; i < TOTAL_ELEMENTS; i+=NumToParallelModify ) {
for( size_t j = 0; j < NumToParallelModify; ++j ) {
temp[j] = modify_buffer_ptr[i+j];
temp[j] += i+j;
modify_buffer_ptr[i+j] = temp[j];
}
}
}
template<typename T, size_t NumToParallelModify>
void TestBatchModifyTemplate() {
T *modify_buffer_ptr = (T*)(void*)c;
T temp[NumToParallelModify];
const size_t TOTAL_ELEMENTS = BUFFER_SIZE / sizeof(T);
for( size_t i = 0; i < TOTAL_ELEMENTS; i+=NumToParallelModify ) {
for( size_t j = 0; j < NumToParallelModify; ++j ) {
temp[j] = modify_buffer_ptr[i+j];
}
for( int j = 0; j < NumToParallelModify; ++j ) {
temp[j] += i+j;
}
for( int j = 0; j < NumToParallelModify; ++j ) {
modify_buffer_ptr[i+j] = temp[j];
}
}
}
void TestParallelModify64Bytes() {
uint8_t *modify_buffer_ptr = (uint8_t*)(void*)c;
uint8_t temp[64];
for( int i = 0; i < BUFFER_SIZE; i+=64 ) {
for( int j = 0; j < 64; ++j ) {
temp[j] = modify_buffer_ptr[i+j];
temp[j] += i+j;
modify_buffer_ptr[i+j] = temp[j];
}
}
}
typedef void (*TestFunc)();
struct DetailedTest {
int typesize, parallelcount;
TestFunc func;
char name[64];
DetailedTest( int ts, int pc, TestFunc f, const char* n ) : typesize(ts), parallelcount(pc), func(f) { strcpy( name, n ); }
};
int main() {
Setup();
DetailedTest tests[] = {
(DetailedTest){ sizeof(int8_t),1, TestParallelModifyTemplate<int8_t,1>, "Modifying 8bit ints, 1 at a time" },
(DetailedTest){ sizeof(int8_t),2, TestParallelModifyTemplate<int8_t,2>, "Modifying 8bit ints, 2 at a time" },
(DetailedTest){ sizeof(int8_t),4, TestParallelModifyTemplate<int8_t,4>, "Modifying 8bit ints, 4 at a time" },
(DetailedTest){ sizeof(int8_t),8, TestParallelModifyTemplate<int8_t,8>, "Modifying 8bit ints, 8 at a time" },
(DetailedTest){ sizeof(int8_t),16, TestParallelModifyTemplate<int8_t,16>, "Modifying 8bit ints, 16 at a time" },
(DetailedTest){ sizeof(int8_t),32, TestParallelModifyTemplate<int8_t,32>, "Modifying 8bit ints, 32 at a time" },
(DetailedTest){ sizeof(int8_t),64, TestParallelModifyTemplate<int8_t,64>, "Modifying 8bit ints, 64 at a time" },
(DetailedTest){ sizeof(int16_t),1, TestParallelModifyTemplate<int16_t,1>, "Modifying 16bit ints, 1 at a time" },
(DetailedTest){ sizeof(int16_t),2, TestParallelModifyTemplate<int16_t,2>, "Modifying 16bit ints, 2 at a time" },
(DetailedTest){ sizeof(int16_t),4, TestParallelModifyTemplate<int16_t,4>, "Modifying 16bit ints, 4 at a time" },
(DetailedTest){ sizeof(int16_t),8, TestParallelModifyTemplate<int16_t,8>, "Modifying 16bit ints, 8 at a time" },
(DetailedTest){ sizeof(int16_t),16, TestParallelModifyTemplate<int16_t,16>, "Modifying 16bit ints, 16 at a time" },
(DetailedTest){ sizeof(int16_t),32, TestParallelModifyTemplate<int16_t,32>, "Modifying 16bit ints, 32 at a time" },
(DetailedTest){ sizeof(int16_t),64, TestParallelModifyTemplate<int16_t,64>, "Modifying 16bit ints, 64 at a time" },
(DetailedTest){ sizeof(int32_t),1, TestParallelModifyTemplate<int32_t,1>, "Modifying 32bit ints, 1 at a time" },
(DetailedTest){ sizeof(int32_t),2, TestParallelModifyTemplate<int32_t,2>, "Modifying 32bit ints, 2 at a time" },
(DetailedTest){ sizeof(int32_t),4, TestParallelModifyTemplate<int32_t,4>, "Modifying 32bit ints, 4 at a time" },
(DetailedTest){ sizeof(int32_t),8, TestParallelModifyTemplate<int32_t,8>, "Modifying 32bit ints, 8 at a time" },
(DetailedTest){ sizeof(int32_t),16, TestParallelModifyTemplate<int32_t,16>, "Modifying 32bit ints, 16 at a time" },
(DetailedTest){ sizeof(int32_t),32, TestParallelModifyTemplate<int32_t,32>, "Modifying 32bit ints, 32 at a time" },
(DetailedTest){ sizeof(int32_t),64, TestParallelModifyTemplate<int32_t,64>, "Modifying 32bit ints, 64 at a time" },
(DetailedTest){ sizeof(int64_t),1, TestParallelModifyTemplate<int64_t,1>, "Modifying 64bit ints, 1 at a time" },
(DetailedTest){ sizeof(int64_t),2, TestParallelModifyTemplate<int64_t,2>, "Modifying 64bit ints, 2 at a time" },
(DetailedTest){ sizeof(int64_t),4, TestParallelModifyTemplate<int64_t,4>, "Modifying 64bit ints, 4 at a time" },
(DetailedTest){ sizeof(int64_t),8, TestParallelModifyTemplate<int64_t,8>, "Modifying 64bit ints, 8 at a time" },
(DetailedTest){ sizeof(int64_t),16, TestParallelModifyTemplate<int64_t,16>, "Modifying 64bit ints, 16 at a time" },
(DetailedTest){ sizeof(int64_t),32, TestParallelModifyTemplate<int64_t,32>, "Modifying 64bit ints, 32 at a time" },
(DetailedTest){ sizeof(int64_t),64, TestParallelModifyTemplate<int64_t,64>, "Modifying 64bit ints, 64 at a time" },
//(DetailedTest){ sizeof(uint8_t),1, TestBatchModifyTemplate<uint8_t,1>, "Modifying bytes, 1 to a batch" },
//(DetailedTest){ sizeof(uint8_t),2, TestBatchModifyTemplate<uint8_t,2>, "Modifying bytes, 2 to a batch" },
//(DetailedTest){ sizeof(uint8_t),4, TestBatchModifyTemplate<uint8_t,4>, "Modifying bytes, 4 to a batch" },
//(DetailedTest){ sizeof(uint8_t),8, TestBatchModifyTemplate<uint8_t,8>, "Modifying bytes, 8 to a batch" },
//(DetailedTest){ sizeof(uint8_t),16, TestBatchModifyTemplate<uint8_t,16>, "Modifying bytes, 16 to a batch" },
//(DetailedTest){ sizeof(uint8_t),32, TestBatchModifyTemplate<uint8_t,32>, "Modifying bytes, 32 to a batch" },
//(DetailedTest){ sizeof(uint8_t),64, TestBatchModifyTemplate<uint8_t,64>, "Modifying bytes, 64 to a batch" },
//(DetailedTest){ sizeof(int32_t),1, TestBatchModifyTemplate<int32_t,1>, "Modifying 32bit ints, 1 to a batch" },
//(DetailedTest){ sizeof(int32_t),2, TestBatchModifyTemplate<int32_t,2>, "Modifying 32bit ints, 2 to a batch" },
//(DetailedTest){ sizeof(int32_t),4, TestBatchModifyTemplate<int32_t,4>, "Modifying 32bit ints, 4 to a batch" },
//(DetailedTest){ sizeof(int32_t),8, TestBatchModifyTemplate<int32_t,8>, "Modifying 32bit ints, 8 to a batch" },
//(DetailedTest){ sizeof(int32_t),16, TestBatchModifyTemplate<int32_t,16>, "Modifying 32bit ints, 16 to a batch" },
//(DetailedTest){ sizeof(int32_t),32, TestBatchModifyTemplate<int32_t,32>, "Modifying 32bit ints, 32 to a batch" },
//(DetailedTest){ sizeof(int32_t),64, TestBatchModifyTemplate<int32_t,64>, "Modifying 32bit ints, 64 to a batch" },
//(DetailedTest){ sizeof(int64_t),1, TestBatchModifyTemplate<int64_t,1>, "Modifying 64bit ints, 1 to a batch" },
//(DetailedTest){ sizeof(int64_t),2, TestBatchModifyTemplate<int64_t,2>, "Modifying 64bit ints, 2 to a batch" },
//(DetailedTest){ sizeof(int64_t),4, TestBatchModifyTemplate<int64_t,4>, "Modifying 64bit ints, 4 to a batch" },
//(DetailedTest){ sizeof(int64_t),8, TestBatchModifyTemplate<int64_t,8>, "Modifying 64bit ints, 8 to a batch" },
//(DetailedTest){ sizeof(int64_t),16, TestBatchModifyTemplate<int64_t,16>, "Modifying 64bit ints, 16 to a batch" },
//(DetailedTest){ sizeof(int64_t),32, TestBatchModifyTemplate<int64_t,32>, "Modifying 64bit ints, 32 to a batch" },
//(DetailedTest){ sizeof(int64_t),64, TestBatchModifyTemplate<int64_t,64>, "Modifying 64bit ints, 64 to a batch" },
//(DetailedTest){ sizeof(uint8_t),64, TestParallelModify64Bytes, "Modifying bytes, 64 at a time (no template)" },
};
RunTests( tests );
//const int numTests = sizeof( tests ) / sizeof(tests[0]);
//Timer trialTimer;
//int trial = 0;
//while( trial < TRIALS && trialTimer.elapsed() < TRIAL_TIMEOUT ) {
// for( auto &test : tests ) {
// for( int round = 0; round < ROUNDS; ++round ) {
// Timer t;
// test.func();
// test.timing[round+ROUNDS*trial] = t.elapsed();
// }
// test.s.Calculate( test.timing, ROUNDS );
// }
// ++trial;
//}
//for( auto &test : tests ) {
// test.s.Calculate( test.timing, ROUNDS*trial );
//}
//printf( "Managed %i trials in %fms\n\n", trial, trialTimer.elapsed() );
//std::sort( std::begin(tests), std::end(tests),
// []( const Test &a, const Test &b ){
// return a.s.average > b.s.average;
// } );
//const char *timesuffix = "ms";
//if( tests[0].s.average < 2 ) {
// timesuffix = "us";
// for( auto &test : tests ) {
// test.s.Magnify( 1000.0f );
// }
//}
//
//for( auto test : tests ) {
// printf( "Average% 8.2f%s (95%% +-%.2f%s) for test [%s]\n",
// test.s.average, timesuffix,
// test.s.standardDeviation*2.0f, timesuffix,
// test.name );
//}
// write to output file if possible
//{
// std::sort( std::begin(tests), std::end(tests),
// []( const Test &a, const Test &b ){
// if( a.typesize != b.typesize )
// return a.typesize < b.typesize;
// if( a.parallelcount != b.parallelcount )
// return a.parallelcount < b.parallelcount;
// return false;
// } );
// char filename[256]; strcpy( filename, __FILE__ ".dat" );
// FILE *fp = fopen( filename, "wt" );
// if( fp ) {
// int sizes[] = { 1,2,4,8 };
// for( int s : sizes ) {
// for( auto test : tests ) {
// if( test.typesize == s ) {
// //fprintf( fp, "%i, %f\n", test.parallelcount, test.s.average );
// fprintf( fp, "%i, %f, %f\n", test.parallelcount, test.s.average, test.s.standardDeviation );
// }
// }
// fprintf( fp, "\n\n" );
// }
// fclose( fp );
// }
//}
return 0;
}