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/**
* app.c
* SpMV Host Application Source File
*
*/
#include <dpu.h>
#include <dpu_log.h>
#include <assert.h>
#include <getopt.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "mram-management.h"
#include "../support/common.h"
#include "../support/matrix.h"
#include "../support/params.h"
#include "../support/timer.h"
#include "../support/utils.h"
#define DPU_BINARY "./bin/dpu_code"
#ifndef ENERGY
#define ENERGY 0
#endif
#if ENERGY
#include <dpu_probe.h>
#endif
// Main of the Host Application
int main(int argc, char** argv) {
// Process parameters
struct Params p = input_params(argc, argv);
// Timing and profiling
Timer timer;
float loadTime = 0.0f, dpuTime = 0.0f, retrieveTime = 0.0f;
#if ENERGY
struct dpu_probe_t probe;
DPU_ASSERT(dpu_probe_init("energy_probe", &probe));
#endif
// Allocate DPUs and load binary
struct dpu_set_t dpu_set, dpu;
uint32_t numDPUs;
DPU_ASSERT(dpu_alloc(NR_DPUS, NULL, &dpu_set));
DPU_ASSERT(dpu_load(dpu_set, DPU_BINARY, NULL));
DPU_ASSERT(dpu_get_nr_dpus(dpu_set, &numDPUs));
PRINT_INFO(p.verbosity >= 1, "Allocated %d DPU(s)", numDPUs);
// Initialize SpMV data structures
PRINT_INFO(p.verbosity >= 1, "Reading matrix %s", p.fileName);
struct COOMatrix cooMatrix = readCOOMatrix(p.fileName);
PRINT_INFO(p.verbosity >= 1, " %u rows, %u columns, %u nonzeros", cooMatrix.numRows, cooMatrix.numCols, cooMatrix.numNonzeros);
struct CSRMatrix csrMatrix = coo2csr(cooMatrix);
uint32_t numRows = csrMatrix.numRows;
uint32_t numCols = csrMatrix.numCols;
uint32_t* rowPtrs = csrMatrix.rowPtrs;
struct Nonzero* nonzeros = csrMatrix.nonzeros;
float* inVector = malloc(ROUND_UP_TO_MULTIPLE_OF_8(numCols*sizeof(float)));
initVector(inVector, numCols);
float* outVector = malloc(ROUND_UP_TO_MULTIPLE_OF_8(numRows*sizeof(float)));
// Partition data structure across DPUs
uint32_t numRowsPerDPU = ROUND_UP_TO_MULTIPLE_OF_2((numRows - 1)/numDPUs + 1);
PRINT_INFO(p.verbosity >= 1, "Assigning %u rows per DPU", numRowsPerDPU);
struct DPUParams dpuParams[numDPUs];
unsigned int dpuIdx = 0;
PRINT_INFO(p.verbosity == 1, "Copying data to DPUs");
DPU_FOREACH (dpu_set, dpu) {
// Allocate parameters
struct mram_heap_allocator_t allocator;
init_allocator(&allocator);
uint32_t dpuParams_m = mram_heap_alloc(&allocator, sizeof(struct DPUParams));
// Find DPU's rows
uint32_t dpuStartRowIdx = dpuIdx*numRowsPerDPU;
uint32_t dpuNumRows;
if(dpuStartRowIdx > numRows) {
dpuNumRows = 0;
} else if(dpuStartRowIdx + numRowsPerDPU > numRows) {
dpuNumRows = numRows - dpuStartRowIdx;
} else {
dpuNumRows = numRowsPerDPU;
}
dpuParams[dpuIdx].dpuNumRows = dpuNumRows;
PRINT_INFO(p.verbosity >= 2, " DPU %u:", dpuIdx);
PRINT_INFO(p.verbosity >= 2, " Receives %u rows", dpuNumRows);
// Partition nonzeros and copy data
if(dpuNumRows > 0) {
// Find DPU's CSR matrix partition
uint32_t* dpuRowPtrs_h = &rowPtrs[dpuStartRowIdx];
uint32_t dpuRowPtrsOffset = dpuRowPtrs_h[0];
struct Nonzero* dpuNonzeros_h = &nonzeros[dpuRowPtrsOffset];
uint32_t dpuNumNonzeros = dpuRowPtrs_h[dpuNumRows] - dpuRowPtrsOffset;
// Allocate MRAM
uint32_t dpuRowPtrs_m = mram_heap_alloc(&allocator, (dpuNumRows + 1)*sizeof(uint32_t));
uint32_t dpuNonzeros_m = mram_heap_alloc(&allocator, dpuNumNonzeros*sizeof(struct Nonzero));
uint32_t dpuInVector_m = mram_heap_alloc(&allocator, numCols*sizeof(float));
uint32_t dpuOutVector_m = mram_heap_alloc(&allocator, dpuNumRows*sizeof(float));
assert((dpuNumRows*sizeof(float))%8 == 0 && "Output sub-vector must be a multiple of 8 bytes!");
PRINT_INFO(p.verbosity >= 2, " Total memory allocated is %d bytes", allocator.totalAllocated);
// Set up DPU parameters
dpuParams[dpuIdx].dpuRowPtrsOffset = dpuRowPtrsOffset;
dpuParams[dpuIdx].dpuRowPtrs_m = dpuRowPtrs_m;
dpuParams[dpuIdx].dpuNonzeros_m = dpuNonzeros_m;
dpuParams[dpuIdx].dpuInVector_m = dpuInVector_m;
dpuParams[dpuIdx].dpuOutVector_m = dpuOutVector_m;
// Send data to DPU
PRINT_INFO(p.verbosity >= 2, " Copying data to DPU");
startTimer(&timer);
copyToDPU(dpu, (uint8_t*)dpuRowPtrs_h, dpuRowPtrs_m, (dpuNumRows + 1)*sizeof(uint32_t));
copyToDPU(dpu, (uint8_t*)dpuNonzeros_h, dpuNonzeros_m, dpuNumNonzeros*sizeof(struct Nonzero));
copyToDPU(dpu, (uint8_t*)inVector, dpuInVector_m, numCols*sizeof(float));
stopTimer(&timer);
loadTime += getElapsedTime(timer);
}
// Send parameters to DPU
PRINT_INFO(p.verbosity >= 2, " Copying parameters to DPU");
startTimer(&timer);
copyToDPU(dpu, (uint8_t*)&dpuParams[dpuIdx], dpuParams_m, sizeof(struct DPUParams));
stopTimer(&timer);
loadTime += getElapsedTime(timer);
++dpuIdx;
}
PRINT_INFO(p.verbosity >= 1, " CPU-DPU Time: %f ms", loadTime*1e3);
// Run all DPUs
PRINT_INFO(p.verbosity >= 1, "Booting DPUs");
startTimer(&timer);
#if ENERGY
DPU_ASSERT(dpu_probe_start(&probe));
#endif
DPU_ASSERT(dpu_launch(dpu_set, DPU_SYNCHRONOUS));
#if ENERGY
DPU_ASSERT(dpu_probe_stop(&probe));
double energy;
DPU_ASSERT(dpu_probe_get(&probe, DPU_ENERGY, DPU_AVERAGE, &energy));
PRINT_INFO(p.verbosity >= 1, " DPU Energy: %f J", energy);
#endif
stopTimer(&timer);
dpuTime += getElapsedTime(timer);
PRINT_INFO(p.verbosity >= 1, " DPU Time: %f ms", dpuTime*1e3);
// Copy back result
PRINT_INFO(p.verbosity >= 1, "Copying back the result");
startTimer(&timer);
dpuIdx = 0;
DPU_FOREACH (dpu_set, dpu) {
unsigned int dpuNumRows = dpuParams[dpuIdx].dpuNumRows;
if(dpuNumRows > 0) {
uint32_t dpuStartRowIdx = dpuIdx*numRowsPerDPU;
copyFromDPU(dpu, dpuParams[dpuIdx].dpuOutVector_m, (uint8_t*)(outVector + dpuStartRowIdx), dpuNumRows*sizeof(float));
}
++dpuIdx;
}
stopTimer(&timer);
retrieveTime += getElapsedTime(timer);
PRINT_INFO(p.verbosity >= 1, " DPU-CPU Time: %f ms", retrieveTime*1e3);
if(p.verbosity == 0) PRINT("CPU-DPU Time(ms): %f DPU Kernel Time (ms): %f DPU-CPU Time (ms): %f", loadTime*1e3, dpuTime*1e3, retrieveTime*1e3);
// Calculating result on CPU
PRINT_INFO(p.verbosity >= 1, "Calculating result on CPU");
float* outVectorReference = malloc(numRows*sizeof(float));
for(uint32_t rowIdx = 0; rowIdx < numRows; ++rowIdx) {
float sum = 0.0f;
for(uint32_t i = rowPtrs[rowIdx]; i < rowPtrs[rowIdx + 1]; ++i) {
uint32_t colIdx = nonzeros[i].col;
float value = nonzeros[i].value;
sum += inVector[colIdx]*value;
}
outVectorReference[rowIdx] = sum;
}
// Verify the result
PRINT_INFO(p.verbosity >= 1, "Verifying the result");
for(uint32_t rowIdx = 0; rowIdx < numRows; ++rowIdx) {
float diff = (outVectorReference[rowIdx] - outVector[rowIdx])/outVectorReference[rowIdx];
const float tolerance = 0.00001;
if(diff > tolerance || diff < -tolerance) {
PRINT_ERROR("Mismatch at index %u (CPU result = %f, DPU result = %f)", rowIdx, outVectorReference[rowIdx], outVector[rowIdx]);
}
}
// Display DPU Logs
if(p.verbosity >= 2) {
PRINT_INFO(p.verbosity >= 2, "Displaying DPU Logs:");
dpuIdx = 0;
DPU_FOREACH (dpu_set, dpu) {
PRINT("DPU %u:", dpuIdx);
DPU_ASSERT(dpu_log_read(dpu, stdout));
++dpuIdx;
}
}
// Deallocate data structures
freeCOOMatrix(cooMatrix);
freeCSRMatrix(csrMatrix);
free(inVector);
free(outVector);
free(outVectorReference);
return 0;
}
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