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Consolidate polynomial smoothers + logging time breakdown in Dense Coarsest invers

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Peter Boyle committed 2026-08-26 14:20:50 -04:00
1 parent d7c9076228
commit b55ca3d50d
21 files changed
+122 -642
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Grid/algorithms/multigrid/BlockCyclicSchurInverse.h
+20
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@@ -140,6 +140,7 @@ public:
///////////////////////////////////////////////////////////////////////////
void Leaf(BlockCyclicMatrix &A, int64_t b)
{
GRID_TRACE("SchurLeaf");
BlockCyclicLayout &L = A.layout;
nLeaf++;
if ( (int)(b % L.Pr) != L.prow ) return;
@@ -211,6 +212,7 @@ public:
int64_t span = b1-b0;
GRID_ASSERT( span >= 1 );
if ( span == 1 ) { Leaf(A, b0); return; }
GRID_TRACE("SchurNode");
nNode++;
int64_t bm = b0 + span/2;
@@ -244,8 +246,10 @@ public:
tGemm += usecond();
// 9. Off-diagonal signs
{ GRID_TRACE("SchurCopy");
WindowCopyScale(mone, Ut, A, c0,m, m,c1);
WindowCopyScale(mone, Tt, A, m,c1, c0,m);
}
}
///////////////////////////////////////////////////////////////////////////
@@ -285,6 +289,22 @@ public:
<< " leaf " << tLeaf/1.0e6
<< " copy " << tCopy/1.0e6 << ")"
<< std::endl;
// SUMMA breakdown: boss-rank seconds, plus the ring/gemm time spread over
// ranks (min/max) -- skew shows as max >> min.
RealD ring = (SUMMA.tRingA+SUMMA.tRingB)/1.0e6;
RealD rmin = -ring, rmax = ring; grid->GlobalMax(rmin); grid->GlobalMax(rmax); rmin = -rmin; // no GlobalMin: max of negation
RealD gmin = -SUMMA.tGemm/1.0e6, gmax = SUMMA.tGemm/1.0e6; grid->GlobalMax(gmin); grid->GlobalMax(gmax); gmin = -gmin;
double gb = SUMMA.bytesRing/1.0e9;
std::cout << GridLogMessage << "BlockCyclicSumma:"
<< " multiplies " << SUMMA.nMultiply << " gemms " << SUMMA.nGemm << " ring msgs " << SUMMA.nRingMsg
<< " | boss secs: alloc " << SUMMA.tAlloc/1.0e6
<< " pack " << SUMMA.tPack/1.0e6
<< " ringA " << SUMMA.tRingA/1.0e6 << " ringB " << SUMMA.tRingB/1.0e6
<< " gemm " << SUMMA.tGemm/1.0e6
<< " | ring min/max over ranks " << rmin << "/" << rmax
<< " gemm min/max " << gmin << "/" << gmax
<< " | ring bytes/rank " << gb << " GB -> " << (ring>0 ? gb/ring : 0.0) << " GB/s/rank (boss)"
<< std::endl;
}
};