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GPU dslash updates

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This commit is contained in:
paboyle 2018-06-27 22:32:21 +01:00
parent f8e880b445
commit 3a50afe7e7
1 changed files with 34 additions and 43 deletions
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77
lib/qcd/action/fermion/WilsonKernelsGpu.cc
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@ -41,9 +41,6 @@ __host__ __device__ inline void synchronise(void)
return;
}
#define GPU_DSLASH_COALESCE
#ifdef GPU_DSLASH_COALESCE
__host__ __device__ inline int get_my_lanes(int Nsimd)
{
#ifdef __CUDA_ARCH__
@ -118,40 +115,42 @@ typename vobj::scalar_object extractLaneFloat2(int lane, const vobj & __restrict
return extracted;
}
#define GPU_COALESCED_STENCIL_LEG_PROJ(Dir,spProj) \
if (SE->_is_local) { \
auto in_l = extractLaneGpu(lane,in[SE->_offset]); \
spProj(chi,in_l); \
} else { \
chi = extractLaneGpu(lane,buf[SE->_offset]); \
#define GPU_COALESCED_STENCIL_LEG_PROJ(Dir,spProj) \
if (SE->_is_local) { \
int mask = Nsimd >> (ptype + 1); \
int plane= lane; \
if (SE->_permute) plane = (lane ^ mask); \
auto in_l = extractLaneGpu(plane,in[SE->_offset]); \
spProj(chi,in_l); \
} else { \
chi = extractLaneGpu(lane,buf[SE->_offset]); \
}
template <class Impl>
accelerator void WilsonKernels<Impl>::GpuDhopSiteDag(StencilView &st, DoubledGaugeFieldView &U,
SiteHalfSpinor *buf, int sF,int LLs,
SiteHalfSpinor *buf, int sF,
int sU, const FermionFieldView &in, FermionFieldView &out)
{
typename SiteHalfSpinor::scalar_object tmp;
typename SiteHalfSpinor::scalar_object chi;
typename SiteHalfSpinor::scalar_object Uchi;
typename SiteSpinor::scalar_object result;
typedef typename SiteSpinor::scalar_type scalar_type;
typedef typename SiteSpinor::vector_type vector_type;
constexpr int Nsimd = sizeof(vector_type)/sizeof(scalar_type);
uint64_t lane_offset= get_my_lane_offset(Nsimd);
uint64_t lanes = get_my_lanes (Nsimd);
uint64_t lanes = get_my_lanes(Nsimd);
StencilEntry *SE;
int ptype;
for(int lane = lane_offset;lane<lane_offset+lanes;lane++){
for(int s=0;s<LLs;s++){
for(int mu=0;mu<2*Nd;mu++) {
SE = st.GetEntry(ptype, mu, sF);
switch(mu){
case Xp:
GPU_COALESCED_STENCIL_LEG_PROJ(Xp,spProjXp); break;
@ -171,14 +170,12 @@ accelerator void WilsonKernels<Impl>::GpuDhopSiteDag(StencilView &st, DoubledGau
default:
GPU_COALESCED_STENCIL_LEG_PROJ(Tm,spProjTm); break;
}
synchronise();
auto U_l = extractLaneGpu(lane,U[sU](mu));
Uchi()=U_l*chi();
Impl::multLinkGpu(lane,Uchi,U[sU],chi,mu);
switch(mu){
case Xp:
spReconXp(result, Uchi); break;
spReconXp(result, Uchi); break;
case Yp:
accumReconYp(result, Uchi); break;
case Zp:
@ -195,19 +192,16 @@ accelerator void WilsonKernels<Impl>::GpuDhopSiteDag(StencilView &st, DoubledGau
default:
accumReconTm(result, Uchi); break;
}
synchronise();
}
insertLane (lane,out[sF],result);
sF++;
}}
};
insertLaneFloat2 (lane,out[sF],result);
}
}
template <class Impl>
accelerator void WilsonKernels<Impl>::GpuDhopSite(StencilView &st, DoubledGaugeFieldView &U,
SiteHalfSpinor *buf, int sF,int LLs,
SiteHalfSpinor *buf, int sF,
int sU, const FermionFieldView &in, FermionFieldView &out)
{
typename SiteHalfSpinor::scalar_object tmp;
typename SiteHalfSpinor::scalar_object chi;
typename SiteHalfSpinor::scalar_object Uchi;
typename SiteSpinor::scalar_object result;
@ -219,14 +213,11 @@ accelerator void WilsonKernels<Impl>::GpuDhopSite(StencilView &st, DoubledGaugeF
uint64_t lane_offset= get_my_lane_offset(Nsimd);
uint64_t lanes = get_my_lanes(Nsimd);
// printf("Evaluating site %d Nsimd %d : lanes %ld %ld - %ld\n",sF,Nsimd,lanes,lane_offset,lane_offset+lanes-1);
StencilEntry *SE;
int ptype;
for(int lane = lane_offset;lane<lane_offset+lanes;lane++){
for(int s=0;s<LLs;s++){
#if 1
#if 0
int mu=0;
SE = st.GetEntry(ptype, mu, sF);
GPU_COALESCED_STENCIL_LEG_PROJ(Xp,spProjXm);
@ -294,11 +285,7 @@ accelerator void WilsonKernels<Impl>::GpuDhopSite(StencilView &st, DoubledGaugeF
GPU_COALESCED_STENCIL_LEG_PROJ(Tm,spProjTp); break;
}
auto U_l = extractLaneGpu(lane,U[sU](mu));
auto tmp = U_l * chi();
Uchi() = tmp;
Impl::multLinkGpu(lane,Uchi,U[sU],chi,mu);
switch(mu){
case Xp:
@ -322,8 +309,7 @@ accelerator void WilsonKernels<Impl>::GpuDhopSite(StencilView &st, DoubledGaugeF
}
#endif
insertLaneFloat2 (lane,out[sF],result);
sF++;
}}
}
};
// Template specialise Gparity to empty for now
@ -332,23 +318,25 @@ accelerator void WilsonKernels<Impl>::GpuDhopSite(StencilView &st, DoubledGaugeF
accelerator void \
WilsonKernels<A>::GpuDhopSite(StencilView &st, \
DoubledGaugeFieldView &U, \
SiteHalfSpinor *buf, int sF, int LLs, \
SiteHalfSpinor *buf, int sF, \
int sU, \
const FermionFieldView &in, \
FermionFieldView &out) {}; \
FermionFieldView &out) { assert(0);}; \
template <> \
accelerator void \
WilsonKernels<A>::GpuDhopSiteDag(StencilView &st, \
DoubledGaugeFieldView &U, \
SiteHalfSpinor *buf, int sF,int LLs, \
SiteHalfSpinor *buf, int sF, \
int sU, \
const FermionFieldView &in, \
FermionFieldView &out) {};
FermionFieldView &out) { assert(0);};
GPU_EMPTY(GparityWilsonImplF);
GPU_EMPTY(GparityWilsonImplFH);
GPU_EMPTY(GparityWilsonImplD);
GPU_EMPTY(GparityWilsonImplDF);
/*
GPU_EMPTY(DomainWallVec5dImplF);
GPU_EMPTY(DomainWallVec5dImplFH);
GPU_EMPTY(DomainWallVec5dImplD);
@ -357,8 +345,11 @@ GPU_EMPTY(ZDomainWallVec5dImplF);
GPU_EMPTY(ZDomainWallVec5dImplFH);
GPU_EMPTY(ZDomainWallVec5dImplD);
GPU_EMPTY(ZDomainWallVec5dImplDF);
*/
FermOpTemplateInstantiate(WilsonKernels);
AdjointFermOpTemplateInstantiate(WilsonKernels);
TwoIndexFermOpTemplateInstantiate(WilsonKernels);
NAMESPACE_END(Grid);