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/******************************************************************************/
/* */
/* The LLVM Compiler Infrastructure */
/* */
/* This file is distributed under the University of Illinois Open Source */
/* License. See LICENSE.TXT for details. */
/* */
/******************************************************************************/
/* */
/* This file defines GPUJIT. */
/* */
/******************************************************************************/
#ifndef GPUJIT_H_
#define GPUJIT_H_
/*
* The following demostrates how we can use the GPURuntime library to
* execute a GPU kernel.
*
* char KernelString[] = "\n\
* .version 1.4\n\
* .target sm_10, map_f64_to_f32\n\
* .entry _Z8myKernelPi (\n\
* .param .u64 __cudaparm__Z8myKernelPi_data)\n\
* {\n\
* .reg .u16 %rh<4>;\n\
* .reg .u32 %r<5>;\n\
* .reg .u64 %rd<6>;\n\
* cvt.u32.u16 %r1, %tid.x;\n\
* mov.u16 %rh1, %ctaid.x;\n\
* mov.u16 %rh2, %ntid.x;\n\
* mul.wide.u16 %r2, %rh1, %rh2;\n\
* add.u32 %r3, %r1, %r2;\n\
* ld.param.u64 %rd1, [__cudaparm__Z8myKernelPi_data];\n\
* cvt.s64.s32 %rd2, %r3;\n\
* mul.wide.s32 %rd3, %r3, 4;\n\
* add.u64 %rd4, %rd1, %rd3;\n\
* st.global.s32 [%rd4+0], %r3;\n\
* exit;\n\
* }\n\
* ";
*
* const char *Entry = "_Z8myKernelPi";
*
* int main() {
* PollyGPUContext *Context;
* PollyGPUModule *Module;
* PollyGPUFunction *Kernel;
* PollyGPUDevice *Device;
* PollyGPUDevicePtr *PtrDevData;
* int *HostData;
* PollyGPUEvent *Start;
* PollyGPUEvent *Stop;
* float *ElapsedTime;
* int MemSize;
* int BlockWidth = 16;
* int BlockHeight = 16;
* int GridWidth = 8;
* int GridHeight = 8;
*
* MemSize = 256*64*sizeof(int);
* polly_initDevice(&Context, &Device);
* polly_getPTXModule(KernelString, &Module);
* polly_getPTXKernelEntry(Entry, Module, &Kernel);
* polly_allocateMemoryForHostAndDevice(&HostData, &DevData, MemSize);
* polly_setKernelParameters(Kernel, BlockWidth, BlockHeight, DevData);
* polly_startTimerByCudaEvent(&Start, &Stop);
* polly_launchKernel(Kernel, GridWidth, GridHeight);
* polly_copyFromDeviceToHost(HostData, DevData, MemSize);
* polly_stopTimerByCudaEvent(Start, Stop, ElapsedTime);
* polly_cleanupGPGPUResources(HostData, DevData, Module, Context, Kernel);
* }
*
*/
typedef struct PollyGPUContextT PollyGPUContext;
typedef struct PollyGPUModuleT PollyGPUModule;
typedef struct PollyGPUFunctionT PollyGPUFunction;
typedef struct PollyGPUDeviceT PollyGPUDevice;
typedef struct PollyGPUDevicePtrT PollyGPUDevicePtr;
typedef struct PollyGPUEventT PollyGPUEvent;
void polly_initDevice(PollyGPUContext **Context, PollyGPUDevice **Device);
void polly_getPTXModule(void *PTXBuffer, PollyGPUModule **Module);
void polly_getPTXKernelEntry(const char *KernelName, PollyGPUModule *Module,
PollyGPUFunction **Kernel);
void polly_startTimerByCudaEvent(PollyGPUEvent **Start, PollyGPUEvent **Stop);
void polly_stopTimerByCudaEvent(PollyGPUEvent *Start, PollyGPUEvent *Stop,
float *ElapsedTimes);
void polly_copyFromHostToDevice(PollyGPUDevicePtr *DevData, void *HostData,
int MemSize);
void polly_copyFromDeviceToHost(void *HostData, PollyGPUDevicePtr *DevData,
int MemSize);
void polly_allocateMemoryForHostAndDevice(void **HostData,
PollyGPUDevicePtr **DevData,
int MemSize);
void polly_setKernelParameters(PollyGPUFunction *Kernel, int BlockWidth,
int BlockHeight, PollyGPUDevicePtr *DevData);
void polly_launchKernel(PollyGPUFunction *Kernel, int GridWidth,
int GridHeight);
void polly_cleanupGPGPUResources(void *HostData, PollyGPUDevicePtr *DevData,
PollyGPUModule *Module,
PollyGPUContext *Context,
PollyGPUFunction *Kernel);
#endif /* GPUJIT_H_ */
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