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fixed tasksys.cpp for 3d tasking

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egaburov
2013-10-23 13:18:22 +02:00
parent f89bad1e94
commit e6c8765891
8 changed files with 557 additions and 17 deletions
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8
examples/common.mk
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@@ -1,11 +1,11 @@
TASK_CXX=../tasksys3d.cpp
TASK_CXX=../tasksys.cpp
TASK_LIB=-lpthread
TASK_OBJ=objs/tasksys3d.o
TASK_OBJ=objs/tasksys.o
CXX=g++ -fopenmp
CXX=clang++
CXXFLAGS+=-Iobjs/ -O2
CC=gcc -fopenmp
CC=clang
CCFLAGS+=-Iobjs/ -O2
LIBS=-lm $(TASK_LIB) -lstdc++

2
examples/mandelbrot_tasks3d/.gitignore vendored Normal file
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@@ -0,0 +1,2 @@
mandelbrot
*.ppm

8
examples/mandelbrot_tasks3d/Makefile Normal file
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@@ -0,0 +1,8 @@
EXAMPLE=mandelbrot_tasks3d
CPP_SRC=mandelbrot_tasks3d.cpp mandelbrot_tasks_serial.cpp
ISPC_SRC=mandelbrot_tasks3d.ispc
ISPC_IA_TARGETS=avx,sse2,sse4
ISPC_ARM_TARGETS=neon
include ../common.mk

180
examples/mandelbrot_tasks3d/mandelbrot_tasks.vcxproj Normal file
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@@ -0,0 +1,180 @@
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<ClCompile Include="mandelbrot_tasks.cpp" />
<ClCompile Include="mandelbrot_tasks_serial.cpp" />
<ClCompile Include="../tasksys.cpp" />
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<ItemGroup>
<CustomBuild Include="mandelbrot_tasks.ispc">
<FileType>Document</FileType>
<Command Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">ispc -O2 %(Filename).ispc -o $(TargetDir)%(Filename).obj -h $(TargetDir)%(Filename)_ispc.h --arch=x86 --target=sse2,sse4-x2,avx-x2
</Command>
<Command Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">ispc -O2 %(Filename).ispc -o $(TargetDir)%(Filename).obj -h $(TargetDir)%(Filename)_ispc.h --target=sse2,sse4-x2,avx-x2
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146
examples/mandelbrot_tasks3d/mandelbrot_tasks3d.cpp Normal file
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@@ -0,0 +1,146 @@
/*
Copyright (c) 2010-2011, Intel Corporation
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
* Neither the name of Intel Corporation nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifdef _MSC_VER
#define _CRT_SECURE_NO_WARNINGS
#define NOMINMAX
#pragma warning (disable: 4244)
#pragma warning (disable: 4305)
#endif
#include <stdio.h>
#include <algorithm>
#include <string.h>
#include "../timing.h"
#include "mandelbrot_tasks3d_ispc.h"
using namespace ispc;
extern void mandelbrot_serial(float x0, float y0, float x1, float y1,
int width, int height, int maxIterations,
int output[]);
/* Write a PPM image file with the image of the Mandelbrot set */
static void
writePPM(int *buf, int width, int height, const char *fn) {
FILE *fp = fopen(fn, "wb");
fprintf(fp, "P6\n");
fprintf(fp, "%d %d\n", width, height);
fprintf(fp, "255\n");
for (int i = 0; i < width*height; ++i) {
// Map the iteration count to colors by just alternating between
// two greys.
char c = (buf[i] & 0x1) ? 240 : 20;
for (int j = 0; j < 3; ++j)
fputc(c, fp);
}
fclose(fp);
printf("Wrote image file %s\n", fn);
}
static void usage() {
fprintf(stderr, "usage: mandelbrot [--scale=<factor>]\n");
exit(1);
}
int main(int argc, char *argv[]) {
unsigned int width = 1536;
unsigned int height = 1024;
float x0 = -2;
float x1 = 1;
float y0 = -1;
float y1 = 1;
if (argc == 1)
;
else if (argc == 2) {
if (strncmp(argv[1], "--scale=", 8) == 0) {
float scale = atof(argv[1] + 8);
if (scale == 0.f)
usage();
width *= scale;
height *= scale;
// round up to multiples of 16
width = (width + 0xf) & ~0xf;
height = (height + 0xf) & ~0xf;
}
else
usage();
}
else
usage();
int maxIterations = 512;
int *buf = new int[width*height];
//
// Compute the image using the ispc implementation; report the minimum
// time of three runs.
//
double minISPC = 1e30;
for (int i = 0; i < 3; ++i) {
// Clear out the buffer
for (unsigned int i = 0; i < width * height; ++i)
buf[i] = 0;
reset_and_start_timer();
mandelbrot_ispc(x0, y0, x1, y1, width, height, maxIterations, buf);
double dt = get_elapsed_mcycles();
minISPC = std::min(minISPC, dt);
}
printf("[mandelbrot ispc+tasks]:\t[%.3f] million cycles\n", minISPC);
writePPM(buf, width, height, "mandelbrot-ispc.ppm");
//
// And run the serial implementation 3 times, again reporting the
// minimum time.
//
double minSerial = 1e30;
for (int i = 0; i < 3; ++i) {
// Clear out the buffer
for (unsigned int i = 0; i < width * height; ++i)
buf[i] = 0;
reset_and_start_timer();
mandelbrot_serial(x0, y0, x1, y1, width, height, maxIterations, buf);
double dt = get_elapsed_mcycles();
minSerial = std::min(minSerial, dt);
}
printf("[mandelbrot serial]:\t\t[%.3f] million cycles\n", minSerial);
writePPM(buf, width, height, "mandelbrot-serial.ppm");
printf("\t\t\t\t(%.2fx speedup from ISPC + tasks)\n", minSerial/minISPC);
return 0;
}

100
examples/mandelbrot_tasks3d/mandelbrot_tasks3d.ispc Normal file
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@@ -0,0 +1,100 @@
/*
Copyright (c) 2010-2012, Intel Corporation
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
* Neither the name of Intel Corporation nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
static inline int
mandel(float c_re, float c_im, int count) {
float z_re = c_re, z_im = c_im;
int i;
for (i = 0; i < count; ++i) {
if (z_re * z_re + z_im * z_im > 4.)
break;
float new_re = z_re*z_re - z_im*z_im;
float new_im = 2.f * z_re * z_im;
unmasked {
z_re = c_re + new_re;
z_im = c_im + new_im;
}
}
return i;
}
/* Task to compute the Mandelbrot iterations for a single scanline.
*/
task void
mandelbrot_scanline(uniform float x0, uniform float dx,
uniform float y0, uniform float dy,
uniform int width, uniform int height,
uniform int xspan, uniform int yspan,
uniform int maxIterations, uniform int output[]) {
#if 0
print("taskIndex = % : % \n", taskIndex);
print("taskIndex_x= % : % \n", taskIndex_x);
print("taskIndex_y= % : % \n", taskIndex_y);
print(" --- \n");
#endif
const uniform int xstart = taskIndex_x * xspan;
const uniform int xend = min(xstart + xspan, width);
const uniform int ystart = taskIndex_y * yspan;
const uniform int yend = min(ystart + yspan, height);
foreach (yi = ystart ... yend, xi = xstart ... xend) {
float x = x0 + xi * dx;
float y = y0 + yi * dy;
int index = yi * width + xi;
output[index] = mandel(x, y, maxIterations);
}
}
#if 1
export void
mandelbrot_ispc(uniform float x0, uniform float y0,
uniform float x1, uniform float y1,
uniform int width, uniform int height,
uniform int maxIterations, uniform int output[]) {
uniform float dx = (x1 - x0) / width;
uniform float dy = (y1 - y0) / height;
const uniform int xspan = 16;
const uniform int yspan = 16;
launch <<<width/xspan, height/yspan>>>
mandelbrot_scanline(x0, dx, y0, dy, width, height, xspan, yspan,
maxIterations, output);
}
#endif

68
examples/mandelbrot_tasks3d/mandelbrot_tasks_serial.cpp Normal file
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@@ -0,0 +1,68 @@
/*
Copyright (c) 2010-2011, Intel Corporation
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
* Neither the name of Intel Corporation nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
static int mandel(float c_re, float c_im, int count) {
float z_re = c_re, z_im = c_im;
int i;
for (i = 0; i < count; ++i) {
if (z_re * z_re + z_im * z_im > 4.f)
break;
float new_re = z_re*z_re - z_im*z_im;
float new_im = 2.f * z_re * z_im;
z_re = c_re + new_re;
z_im = c_im + new_im;
}
return i;
}
void mandelbrot_serial(float x0, float y0, float x1, float y1,
int width, int height, int maxIterations,
int output[])
{
float dx = (x1 - x0) / width;
float dy = (y1 - y0) / height;
for (int j = 0; j < height; j++) {
for (int i = 0; i < width; ++i) {
float x = x0 + i * dx;
float y = y0 + j * dy;
int index = (j * width + i);
output[index] = mandel(x, y, maxIterations);
}
}
}

62
examples/tasksys.cpp
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@@ -59,9 +59,7 @@
#define ISPC_USE_PTHREADS
#define ISPC_USE_PTHREADS_FULLY_SUBSCRIBED
#define ISPC_USE_CILK
*/
#define ISPC_USE_OMP
/*
#define ISPC_USE_TBB_TASK_GROUP
#define ISPC_USE_TBB_PARALLEL_FOR
@@ -172,21 +170,39 @@
// Signature of ispc-generated 'task' functions
typedef void (*TaskFuncType)(void *data, int threadIndex, int threadCount,
int taskIndex, int taskCount);
int taskIndex, int taskCount,
int taskIndex_x, int taskIndex_y, int taskIndex_z,
int taskCount_x, int taskCount_y, int taskCount_z);
// Small structure used to hold the data for each task
struct TaskInfo {
TaskFuncType func;
void *data;
int taskIndex, taskCount;
int taskCount3d[3];
#if defined(ISPC_IS_WINDOWS)
event taskEvent;
#endif
int taskIndex_x() const
{
return taskIndex % taskCount3d[0];
}
int taskIndex_y() const
{
return ( taskIndex / taskCount3d[0] ) % taskCount3d[1];
}
int taskIndex_z() const
{
return taskIndex / ( taskCount3d[0]*taskCount3d[1] );
}
int taskCount_x() const { return taskCount3d[0]; }
int taskCount_y() const { return taskCount3d[1]; }
int taskCount_z() const { return taskCount3d[2]; }
};
// ispc expects these functions to have C linkage / not be mangled
extern "C" {
void ISPCLaunch(void **handlePtr, void *f, void *data, int count);
void ISPCLaunch(void **handlePtr, void *f, void *data, int countx,int county, int countz);
void *ISPCAlloc(void **handlePtr, int64_t size, int32_t alignment);
void ISPCSync(void *handle);
}
@@ -520,7 +536,9 @@ lRunTask(void *ti) {
// Actually run the task
taskInfo->func(taskInfo->data, threadIndex, threadCount,
taskInfo->taskIndex, taskInfo->taskCount);
taskInfo->taskIndex, taskInfo->taskCount,
taskInfo->taskIndex_x(), taskInfo->taskIndex_y(), taskInfo->taskIndex_z(),
taskInfo->taskCount_x(), taskInfo->taskCount_y(), taskInfo->taskCount_z());
}
@@ -561,7 +579,9 @@ lRunTask(LPVOID param) {
// will cause bugs in code that uses those.
int threadIndex = 0;
int threadCount = 1;
ti->func(ti->data, threadIndex, threadCount, ti->taskIndex, ti->taskCount);
ti->func(ti->data, threadIndex, threadCount, ti->taskIndex, ti->taskCount,
ti->taskIndex_x(), ti->taskIndex_y(), ti->taskIndex_z(),
ti->taskCount_x(), ti->taskCount_y(), ti->taskCount_z());
// Signal the event that this task is done
ti->taskEvent.set();
@@ -662,7 +682,9 @@ lTaskEntry(void *arg) {
DBG(fprintf(stderr, "running task %d from group %p\n", taskNumber, tg));
TaskInfo *myTask = tg->GetTaskInfo(taskNumber);
myTask->func(myTask->data, threadIndex, threadCount, myTask->taskIndex,
myTask->taskCount);
myTask->taskCount,
myTask->taskIndex_x(), myTask->taskIndex_y(), myTask->taskIndex_z(),
myTask->taskCount_x(), myTask->taskCount_y(), myTask->taskCount_z());
//
// Decrement the "number of unfinished tasks" counter in the task
@@ -863,7 +885,9 @@ TaskGroup::Sync() {
// Do work for _myTask_
//
// FIXME: bogus values for thread index/thread count here as well..
myTask->func(myTask->data, 0, 1, myTask->taskIndex, myTask->taskCount);
myTask->func(myTask->data, 0, 1, myTask->taskIndex, myTask->taskCount,
myTask->taskIndex_x(), myTask->taskIndex_y(), myTask->taskIndex_z(),
myTask->taskCount_x(), myTask->taskCount_y(), myTask->taskCount_z());
//
// Decrement the number of unfinished tasks counter
@@ -893,7 +917,9 @@ TaskGroup::Launch(int baseIndex, int count) {
// Actually run the task.
// Cilk does not expose the task -> thread mapping so we pretend it's 1:1
ti->func(ti->data, ti->taskIndex, ti->taskCount, ti->taskIndex, ti->taskCount);
ti->func(ti->data, ti->taskIndex, ti->taskCount, ti->taskIndex, ti->taskCount,
ti->taskIndex_x(), ti->taskIndex_y(), ti->taskIndex_z(),
ti->taskCount_x(), ti->taskCount_y(), ti->taskCount_z());
}
}
@@ -922,7 +948,9 @@ TaskGroup::Launch(int baseIndex, int count) {
// Actually run the task.
int threadIndex = omp_get_thread_num();
int threadCount = omp_get_num_threads();
ti->func(ti->data, threadIndex, threadCount, ti->taskIndex, ti->taskCount);
ti->func(ti->data, threadIndex, threadCount, ti->taskIndex, ti->taskCount,
ti->taskIndex_x(), ti->taskIndex_y(), ti->taskIndex_z(),
ti->taskCount_x(), ti->taskCount_y(), ti->taskCount_z());
}
}
@@ -953,7 +981,9 @@ TaskGroup::Launch(int baseIndex, int count) {
int threadIndex = ti->taskIndex;
int threadCount = ti->taskCount;
ti->func(ti->data, threadIndex, threadCount, ti->taskIndex, ti->taskCount);
ti->func(ti->data, threadIndex, threadCount, ti->taskIndex, ti->taskCount,
ti->taskIndex_x(), ti->taskIndex_y(), ti->taskIndex_z(),
ti->taskCount_x(), ti->taskCount_y(), ti->taskCount_z());
});
}
@@ -980,7 +1010,9 @@ TaskGroup::Launch(int baseIndex, int count) {
// TBB does not expose the task -> thread mapping so we pretend it's 1:1
int threadIndex = ti->taskIndex;
int threadCount = ti->taskCount;
ti->func(ti->data, threadIndex, threadCount, ti->taskIndex, ti->taskCount);
ti->func(ti->data, threadIndex, threadCount, ti->taskIndex, ti->taskCount,
ti->taskIndex_x(), ti->taskIndex_y(), ti->taskIndex_z(),
ti->taskCount_x(), ti->taskCount_y(), ti->taskCount_z());
});
}
}
@@ -1033,7 +1065,8 @@ FreeTaskGroup(TaskGroup *tg) {
///////////////////////////////////////////////////////////////////////////
void
ISPCLaunch(void **taskGroupPtr, void *func, void *data, int count) {
ISPCLaunch(void **taskGroupPtr, void *func, void *data, int countx, int county, int countz) {
const int count = countx*county*countz;
TaskGroup *taskGroup;
if (*taskGroupPtr == NULL) {
InitTaskSystem();
@@ -1050,6 +1083,9 @@ ISPCLaunch(void **taskGroupPtr, void *func, void *data, int count) {
ti->data = data;
ti->taskIndex = i;
ti->taskCount = count;
ti->taskCount3d[0] = countx;
ti->taskCount3d[1] = county;
ti->taskCount3d[2] = countz;
}
taskGroup->Launch(baseIndex, count);
}