From e49e95b037a9dd499b23669d0b3ca50f98304347 Mon Sep 17 00:00:00 2001
From: Peter Boyle <paboyle@ph.ed.ac.uk>
Date: Fri, 22 Mar 2024 15:39:27 +0000
Subject: [PATCH] Upgrade of the Britney test with flight recorder and fast xor
 checksum

---
 Grid/lattice/Lattice_reduction.h | 20 ++++++++++++++++----
 1 file changed, 16 insertions(+), 4 deletions(-)

diff --git a/Grid/lattice/Lattice_reduction.h b/Grid/lattice/Lattice_reduction.h
index 969a4a10..4e11378d 100644
--- a/Grid/lattice/Lattice_reduction.h
+++ b/Grid/lattice/Lattice_reduction.h
@@ -285,13 +285,25 @@ inline ComplexD rankInnerProduct(const Lattice<vobj> &left,const Lattice<vobj> &
 template<class vobj>
 inline ComplexD innerProduct(const Lattice<vobj> &left,const Lattice<vobj> &right) {
   GridBase *grid = left.Grid();
-  uint32_t csum=0;
-  //  Uint32Checksum(left,csum);
+
+#ifdef GRID_SYCL
+  uint64_t csum=0;
+  if ( FlightRecorder::LoggingMode != FlightRecorder::LoggingModeNone)
+  {
+    // Hack
+    // Fast integer xor checksum. Can also be used in comms now.
+    autoView(l_v,left,AcceleratorRead);
+    Integer words = left.Grid()->oSites()*sizeof(vobj)/sizeof(uint64_t);
+    uint64_t *base= (uint64_t *)&l_v[0];
+    csum=svm_xor(base,words);
+  }
+  FlightRecorder::CsumLog(csum);
+#endif
   ComplexD nrm = rankInnerProduct(left,right);
   RealD local = real(nrm);
-  GridNormLog(real(nrm),csum); // Could log before and after global sum to distinguish local and MPI
+  FlightRecorder::NormLog(real(nrm)); 
   grid->GlobalSum(nrm);
-  GridMPINormLog(local,real(nrm)); 
+  FlightRecorder::ReductionLog(local,real(nrm)); 
   return nrm;
 }