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cudnnRNN_algofindbwd.go
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package gocudnn
/*
#include <cudnn.h>
*/
import "C"
import (
"unsafe"
"github.com/dereklstinson/cutil"
)
//GetRNNBackwardDataAlgorithmMaxCount gets the max number of algorithms for the back prop rnn
func (r *RNND) getRNNBackwardDataAlgorithmMaxCount(handle *Handle) (int32, error) {
var count C.int
var err error
if handle.w != nil {
err = handle.w.Work(func() error {
return Status(C.cudnnGetRNNBackwardDataAlgorithmMaxCount(
handle.x,
r.descriptor,
&count,
)).error("(r *RNND) getRNNBackwardDataAlgorithmMaxCount")
})
} else {
err = Status(C.cudnnGetRNNBackwardDataAlgorithmMaxCount(
handle.x,
r.descriptor,
&count,
)).error("(r *RNND) getRNNBackwardDataAlgorithmMaxCount")
}
return int32(count), err
}
//FindRNNBackwardDataAlgorithmEx finds a list of Algorithm for backprop this passes like 26 parameters and pointers and stuff so watch out.
func (r *RNND) FindRNNBackwardDataAlgorithmEx(
handle *Handle,
yD []*TensorD, y cutil.Mem,
dyD []*TensorD, dy cutil.Mem,
dhyD *TensorD, dhy cutil.Mem,
dcyD *TensorD, dcy cutil.Mem,
wD *FilterD, w cutil.Mem,
hxD *TensorD, hx cutil.Mem,
cxD *TensorD, cx cutil.Mem,
dxD []*TensorD, dx cutil.Mem,
dhxD *TensorD, dhx cutil.Mem,
dcxD *TensorD, dcx cutil.Mem,
findIntensity float32,
wspace cutil.Mem, wspacesize uint,
rspace cutil.Mem, rspacesize uint,
) ([]AlgorithmPerformance, error) {
reqAlgocount, err := r.getRNNBackwardDataAlgorithmMaxCount(handle)
if err != nil {
return nil, err
}
seqLen := C.int(len(yD))
cyD := tensorDArrayToC(yD)
cdyD := tensorDArrayToC(dyD)
cdxD := tensorDArrayToC(dxD)
var actualcount C.int
perfresults := make([]C.cudnnAlgorithmPerformance_t, reqAlgocount)
if handle.w != nil {
err = handle.w.Work(func() error {
if wspace == nil {
return Status(C.cudnnFindRNNBackwardDataAlgorithmEx(
handle.x,
r.descriptor,
seqLen,
&cyD[0], y.Ptr(),
&cdyD[0], dy.Ptr(),
dhyD.descriptor, dhy.Ptr(),
dcyD.descriptor, dcy.Ptr(),
wD.descriptor, w.Ptr(),
hxD.descriptor, hx.Ptr(),
cxD.descriptor, cx.Ptr(),
&cdxD[0], dx.Ptr(),
dhxD.descriptor, dhx.Ptr(),
dcxD.descriptor, dcx.Ptr(),
C.float(findIntensity),
C.int(reqAlgocount),
&actualcount,
&perfresults[0],
nil,
C.size_t(0),
rspace.Ptr(), C.size_t(rspacesize), //31 total?
)).error("(r *RNND) FindRNNBackwardDataAlgorithmEx")
}
return Status(C.cudnnFindRNNBackwardDataAlgorithmEx(
handle.x,
r.descriptor,
seqLen,
&cyD[0], y.Ptr(),
&cdyD[0], dy.Ptr(),
dhyD.descriptor, dhy.Ptr(),
dcyD.descriptor, dcy.Ptr(),
wD.descriptor, w.Ptr(),
hxD.descriptor, hx.Ptr(),
cxD.descriptor, cx.Ptr(),
&cdxD[0], dx.Ptr(),
dhxD.descriptor, dhx.Ptr(),
dcxD.descriptor, dcx.Ptr(),
C.float(findIntensity),
C.int(reqAlgocount),
&actualcount,
&perfresults[0],
wspace.Ptr(), C.size_t(wspacesize),
rspace.Ptr(), C.size_t(rspacesize),
)).error("(r *RNND) FindRNNBackwardDataAlgorithmEx")
})
} else {
if wspace == nil {
err = Status(C.cudnnFindRNNBackwardDataAlgorithmEx(
handle.x,
r.descriptor,
seqLen,
&cyD[0], y.Ptr(),
&cdyD[0], dy.Ptr(),
dhyD.descriptor, dhy.Ptr(),
dcyD.descriptor, dcy.Ptr(),
wD.descriptor, w.Ptr(),
hxD.descriptor, hx.Ptr(),
cxD.descriptor, cx.Ptr(),
&cdxD[0], dx.Ptr(),
dhxD.descriptor, dhx.Ptr(),
dcxD.descriptor, dcx.Ptr(),
C.float(findIntensity),
C.int(reqAlgocount),
&actualcount,
&perfresults[0],
nil,
C.size_t(0),
rspace.Ptr(), C.size_t(rspacesize), //31 total?
)).error("(r *RNND) FindRNNBackwardDataAlgorithmEx")
} else {
err = Status(C.cudnnFindRNNBackwardDataAlgorithmEx(
handle.x,
r.descriptor,
seqLen,
&cyD[0], y.Ptr(),
&cdyD[0], dy.Ptr(),
dhyD.descriptor, dhy.Ptr(),
dcyD.descriptor, dcy.Ptr(),
wD.descriptor, w.Ptr(),
hxD.descriptor, hx.Ptr(),
cxD.descriptor, cx.Ptr(),
&cdxD[0], dx.Ptr(),
dhxD.descriptor, dhx.Ptr(),
dcxD.descriptor, dcx.Ptr(),
C.float(findIntensity),
C.int(reqAlgocount),
&actualcount,
&perfresults[0],
wspace.Ptr(), C.size_t(wspacesize),
rspace.Ptr(), C.size_t(rspacesize),
)).error("(r *RNND) FindRNNBackwardDataAlgorithmEx")
}
}
return calgoperftogoarray(perfresults, handle.gogc), err
}
//FindRNNBackwardDataAlgorithmExUS is like FindRNNBackwardDataAlgorithmEx but uses unsafe.Pointer instead of cutil.Mem
func (r *RNND) FindRNNBackwardDataAlgorithmExUS(
handle *Handle,
yD []*TensorD, y unsafe.Pointer,
dyD []*TensorD, dy unsafe.Pointer,
dhyD *TensorD, dhy unsafe.Pointer,
dcyD *TensorD, dcy unsafe.Pointer,
wD *FilterD, w unsafe.Pointer,
hxD *TensorD, hx unsafe.Pointer,
cxD *TensorD, cx unsafe.Pointer,
dxD []*TensorD, dx unsafe.Pointer,
dhxD *TensorD, dhx unsafe.Pointer,
dcxD *TensorD, dcx unsafe.Pointer,
findIntensity float32,
wspace unsafe.Pointer, wspacesize uint,
rspace unsafe.Pointer, rspacesize uint,
) ([]AlgorithmPerformance, error) {
reqAlgocount, err := r.getRNNBackwardDataAlgorithmMaxCount(handle)
if err != nil {
return nil, err
}
seqLen := C.int(len(yD))
cyD := tensorDArrayToC(yD)
cdyD := tensorDArrayToC(dyD)
cdxD := tensorDArrayToC(dxD)
var actualcount C.int
perfresults := make([]C.cudnnAlgorithmPerformance_t, reqAlgocount)
if handle.w != nil {
err = handle.w.Work(func() error {
return Status(C.cudnnFindRNNBackwardDataAlgorithmEx(
handle.x,
r.descriptor,
seqLen,
&cyD[0], y,
&cdyD[0], dy,
dhyD.descriptor, dhy,
dcyD.descriptor, dcy,
wD.descriptor, w,
hxD.descriptor, hx,
cxD.descriptor, cx,
&cdxD[0], dx,
dhxD.descriptor, dhx,
dcxD.descriptor, dcx,
C.float(findIntensity),
C.int(reqAlgocount),
&actualcount,
&perfresults[0],
wspace, C.size_t(wspacesize),
rspace, C.size_t(rspacesize),
//31 total?
)).error("(r *RNND) FindRNNBackwardDataAlgorithmExUS")
})
} else {
err = Status(C.cudnnFindRNNBackwardDataAlgorithmEx(
handle.x,
r.descriptor,
seqLen,
&cyD[0], y,
&cdyD[0], dy,
dhyD.descriptor, dhy,
dcyD.descriptor, dcy,
wD.descriptor, w,
hxD.descriptor, hx,
cxD.descriptor, cx,
&cdxD[0], dx,
dhxD.descriptor, dhx,
dcxD.descriptor, dcx,
C.float(findIntensity),
C.int(reqAlgocount),
&actualcount,
&perfresults[0],
wspace, C.size_t(wspacesize),
rspace, C.size_t(rspacesize),
//31 total?
)).error("(r *RNND) FindRNNBackwardDataAlgorithmExUS")
}
return calgoperftogoarray(perfresults, handle.gogc), err
}