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This commit is contained in:
Peter Boyle 2022-10-04 11:10:34 -07:00
parent 188d2c7a4d
commit 9296299b61
1 changed files with 8 additions and 8 deletions
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16
Grid/qcd/action/fermion/WilsonCompressor.h
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@ -117,19 +117,19 @@ public:
typedef decltype(coalescedRead(*in)) sobj;
typedef decltype(coalescedRead(*out0)) hsobj;
unsigned int Nsimd = vobj::Nsimd();
constexpr unsigned int Nsimd = vobj::Nsimd();
unsigned int mask = Nsimd >> (type + 1);
int lane = acceleratorSIMTlane(Nsimd);
int j0 = lane &(~mask); // inner coor zero
int j1 = lane |(mask) ; // inner coor one
const vobj *vp0 = &in[k];
const vobj *vp1 = &in[m];
const vobj *vp = (lane&mask) ? vp1:vp0;
auto sa = coalescedRead(*vp,j0);
auto sb = coalescedRead(*vp,j1);
const vobj *vp0 = &in[k]; // out0[j] = merge low bit of type from in[k] and in[m]
const vobj *vp1 = &in[m]; // out1[j] = merge hi bit of type from in[k] and in[m]
const vobj *vp = (lane&mask) ? vp1:vp0;// if my lane has high bit take vp1, low bit take vp0
auto sa = coalescedRead(*vp,j0); // lane to read for out 0, NB 50% read coalescing
auto sb = coalescedRead(*vp,j1); // lane to read for out 1
hsobj psa, psb;
projector::Proj(psa,sa,mu,dag);
projector::Proj(psb,sb,mu,dag);
projector::Proj(psa,sa,mu,dag); // spin project the result0
projector::Proj(psb,sb,mu,dag); // spin project the result1
coalescedWrite(out0[j],psa);
coalescedWrite(out1[j],psb);
#else