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Adjust NVCC flags to avoid issues with atomicAdd with doubles

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Signed-off-by: Rafael Ravedutti <rafaelravedutti@gmail.com>
This commit is contained in:
Rafael Ravedutti 2022-11-14 18:01:46 +01:00
parent c70ebce4c1
commit 93188d1383
2 changed files with 10 additions and 5 deletions
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4
gromacs/cuda/force_lj.cu
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@ -196,10 +196,10 @@ __global__ void computeForceLJ_cuda_warp(MD_FLOAT *cuda_cl_x, MD_FLOAT *cuda_cl_
int cond;
#if CLUSTER_M == CLUSTER_N
cond = half_neigh ? (ci_cj0 != cj || cii_pos < cjj_pos) :
(ci_cj0 != cj || cii_pos != cjj_pos);
(ci_cj0 != cj || cii_pos != cjj_pos);
#elif CLUSTER_M < CLUSTER_N
cond = half_neigh ? (ci_cj0 != cj || cii_pos + CLUSTER_M * (ci_pos & 0x1) < cjj_pos) :
(ci_cj0 != cj || cii_pos + CLUSTER_M * (ci_pos & 0x1) != cjj_pos);
(ci_cj0 != cj || cii_pos + CLUSTER_M * (ci_pos & 0x1) != cjj_pos);
#endif
if(cond) {
MD_FLOAT delx = xtmp - cj_x[CL_X_OFFSET + cjj_pos];

11
include_NVCC.mk
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@ -6,10 +6,15 @@ ANSI_CFLAGS += -std=c99
ANSI_CFLAGS += -pedantic
ANSI_CFLAGS += -Wextra
CFLAGS = -O3 -march=native -ffast-math -funroll-loops --forward-unknown-to-host-compiler # -fopenmp
#
# A100 + Native
CFLAGS = -O3 -arch=sm_80 -march=native -ffast-math -funroll-loops --forward-unknown-to-host-compiler # -fopenmp
# A40 + Native
#CFLAGS = -O3 -arch=sm_80 -march=native -ffast-math -funroll-loops --forward-unknown-to-host-compiler # -fopenmp
# Cascade Lake
#CFLAGS = -O3 -march=cascadelake -ffast-math -funroll-loops --forward-unknown-to-host-compiler # -fopenmp
#CFLAGS = -O3 -g # -fopenmp
#CFLAGS = -O0 -g -std=c99 -fargument-noalias
# For GROMACS kernels, we need at least sm_61 due to atomicAdd with doubles
# TODO: Check if this is required for full neighbor-lists and just compile kernel for that case if not
#CFLAGS = -O3 -g -arch=sm_61 # -fopenmp
ASFLAGS = -masm=intel
LFLAGS =