Question

我试图使用cuda-memcheck来调试我的应用程序。 Ubuntu 12.04，GeForce GTX 680 / K20c，CUDA 6.5。

琐碎的例子，trivial.cu：

#include <stdio.h>

__global__ void foo()
{
}

int main()
{
  foo<<<1,1>>>();
  printf("CUDA error: %s\n", cudaGetErrorString(cudaGetLastError()));  
  return 0;
}

我是通过nvcc trivial.cu -o trivial.bin编译的。现在直接运行./trivial.bin可以正常工作。它打印输出：

CUDA error: no error

现在我通过cuda-memcheck ./trivial.bin调用它。 COMPUTE_PROFILE，CUDA_PROFILE，CUDA_INJECTION32_DLL和CUDA_INJECTION64_DLL都未设置。我有/tmp的写入权限。 $TMPDIR = /var/tmp/625352.1.16C-32G-GPU-K20，我也可以写信给$TMPDIR。

我得到了这个输出：

========= CUDA-MEMCHECK
========= Could not start the application (14)
========= No CUDA-MEMCHECK results found

（可能与SGE有关。我只在非交互式SGE作业中收到此错误。）

我现在可以通过以下方式在交互式shell中重现错误：

mkdir /var/tmp/625352.1.16C-32G-GPU-K20
export TMPDIR=/var/tmp/625352.1.16C-32G-GPU-K20
cuda-memcheck ./trivial.bin

所以它以某种方式与这个$TMPDIR混淆。这似乎是cuda-memcheck中的内部错误。如果$TMPDIR的长度大于或等于30个字符，似乎就会发生。

我没有在Google上找到关于此错误的单一结果，也没有在文档中找到。

有什么问题？我该如何解决这个问题？如何找出错误的含义？错误代码（14）是什么意思？（我在哪里可以问？）

strace输出：

+ strace cuda-memcheck ./trivial.bin
execve("/usr/local/cuda-6.5/bin/cuda-memcheck", ["cuda-memcheck", "./trivial.bin"], [/* 122 vars */]) = 0
brk(0)                                  = 0x1af8000
access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or directory)
mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x2b430d6f1000
access("/etc/ld.so.preload", R_OK)      = -1 ENOENT (No such file or directory)
open("tls/x86_64/libdl.so.2", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
open("tls/libdl.so.2", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
open("x86_64/libdl.so.2", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
open("libdl.so.2", O_RDONLY|O_CLOEXEC)  = -1 ENOENT (No such file or directory)
open("/usr/local/lib/tls/x86_64/libdl.so.2", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
stat("/usr/local/lib/tls/x86_64", 0x7fff1cb31520) = -1 ENOENT (No such file or directory)
open("/usr/local/lib/tls/libdl.so.2", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
stat("/usr/local/lib/tls", 0x7fff1cb31520) = -1 ENOENT (No such file or directory)
open("/usr/local/lib/x86_64/libdl.so.2", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
stat("/usr/local/lib/x86_64", 0x7fff1cb31520) = -1 ENOENT (No such file or directory)
open("/usr/local/lib/libdl.so.2", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
stat("/usr/local/lib", {st_mode=S_IFDIR|0775, st_size=4096, ...}) = 0
open("/usr/local/cuda-6.0/lib64/tls/x86_64/libdl.so.2", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
stat("/usr/local/cuda-6.0/lib64/tls/x86_64", 0x7fff1cb31520) = -1 ENOENT (No such file or directory)
open("/usr/local/cuda-6.0/lib64/tls/libdl.so.2", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
stat("/usr/local/cuda-6.0/lib64/tls", 0x7fff1cb31520) = -1 ENOENT (No such file or directory)
open("/usr/local/cuda-6.0/lib64/x86_64/libdl.so.2", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
stat("/usr/local/cuda-6.0/lib64/x86_64", 0x7fff1cb31520) = -1 ENOENT (No such file or directory)
open("/usr/local/cuda-6.0/lib64/libdl.so.2", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
stat("/usr/local/cuda-6.0/lib64", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
open("/usr/lib/atlas-base/tls/x86_64/libdl.so.2", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
stat("/usr/lib/atlas-base/tls/x86_64", 0x7fff1cb31520) = -1 ENOENT (No such file or directory)
open("/usr/lib/atlas-base/tls/libdl.so.2", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
stat("/usr/lib/atlas-base/tls", 0x7fff1cb31520) = -1 ENOENT (No such file or directory)
open("/usr/lib/atlas-base/x86_64/libdl.so.2", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
stat("/usr/lib/atlas-base/x86_64", 0x7fff1cb31520) = -1 ENOENT (No such file or directory)
open("/usr/lib/atlas-base/libdl.so.2", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
stat("/usr/lib/atlas-base", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
open("/usr/local/cuda-6.5/lib64/tls/x86_64/libdl.so.2", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
stat("/usr/local/cuda-6.5/lib64/tls/x86_64", 0x7fff1cb31520) = -1 ENOENT (No such file or directory)
open("/usr/local/cuda-6.5/lib64/tls/libdl.so.2", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
stat("/usr/local/cuda-6.5/lib64/tls", 0x7fff1cb31520) = -1 ENOENT (No such file or directory)
open("/usr/local/cuda-6.5/lib64/x86_64/libdl.so.2", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
stat("/usr/local/cuda-6.5/lib64/x86_64", 0x7fff1cb31520) = -1 ENOENT (No such file or directory)
open("/usr/local/cuda-6.5/lib64/libdl.so.2", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
stat("/usr/local/cuda-6.5/lib64", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
open("/etc/ld.so.cache", O_RDONLY|O_CLOEXEC) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=115443, ...}) = 0
mmap(NULL, 115443, PROT_READ, MAP_PRIVATE, 3, 0) = 0x2b430d720000
close(3)                                = 0
access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or directory)
open("/lib/x86_64-linux-gnu/libdl.so.2", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\340\r\0\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0644, st_size=14768, ...}) = 0
mmap(NULL, 2109704, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x2b430d920000
mprotect(0x2b430d922000, 2097152, PROT_NONE) = 0
mmap(0x2b430db22000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x2000) = 0x2b430db22000
close(3)                                = 0
open("tls/x86_64/libpthread.so.0", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
open("tls/libpthread.so.0", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
open("x86_64/libpthread.so.0", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
open("libpthread.so.0", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
open("/usr/local/lib/libpthread.so.0", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
open("/usr/local/cuda-6.0/lib64/libpthread.so.0", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
open("/usr/lib/atlas-base/libpthread.so.0", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
open("/usr/local/cuda-6.5/lib64/libpthread.so.0", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or directory)
open("/lib/x86_64-linux-gnu/libpthread.so.0", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\200l\0\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=135366, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x2b430d6f3000
mmap(NULL, 2212904, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x2b430db28000
mprotect(0x2b430db40000, 2093056, PROT_NONE) = 0
mmap(0x2b430dd3f000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x17000) = 0x2b430dd3f000
mmap(0x2b430dd41000, 13352, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x2b430dd41000
close(3)                                = 0
open("tls/x86_64/librt.so.1", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
open("tls/librt.so.1", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
open("x86_64/librt.so.1", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
open("librt.so.1", O_RDONLY|O_CLOEXEC)  = -1 ENOENT (No such file or directory)
open("/usr/local/lib/librt.so.1", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
open("/usr/local/cuda-6.0/lib64/librt.so.1", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
open("/usr/lib/atlas-base/librt.so.1", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
open("/usr/local/cuda-6.5/lib64/librt.so.1", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or directory)
open("/lib/x86_64-linux-gnu/librt.so.1", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\340!\0\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0644, st_size=31752, ...}) = 0
mmap(NULL, 2128984, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x2b430dd48000
mprotect(0x2b430dd4f000, 2093056, PROT_NONE) = 0
mmap(0x2b430df4e000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x6000) = 0x2b430df4e000
close(3)                                = 0
open("tls/x86_64/libstdc++.so.6", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
open("tls/libstdc++.so.6", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
open("x86_64/libstdc++.so.6", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
open("libstdc++.so.6", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
open("/usr/local/lib/libstdc++.so.6", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
open("/usr/local/cuda-6.0/lib64/libstdc++.so.6", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
open("/usr/lib/atlas-base/libstdc++.so.6", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
open("/usr/local/cuda-6.5/lib64/libstdc++.so.6", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or directory)
open("/usr/lib/x86_64-linux-gnu/libstdc++.so.6", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0P\241\5\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0644, st_size=962656, ...}) = 0
mmap(NULL, 3142544, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x2b430df50000
mprotect(0x2b430e032000, 2093056, PROT_NONE) = 0
mmap(0x2b430e231000, 40960, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0xe1000) = 0x2b430e231000
mmap(0x2b430e23b000, 82832, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x2b430e23b000
close(3)                                = 0
open("tls/x86_64/libm.so.6", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
open("tls/libm.so.6", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
open("x86_64/libm.so.6", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
open("libm.so.6", O_RDONLY|O_CLOEXEC)   = -1 ENOENT (No such file or directory)
open("/usr/local/lib/libm.so.6", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
open("/usr/local/cuda-6.0/lib64/libm.so.6", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
open("/usr/lib/atlas-base/libm.so.6", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
open("/usr/local/cuda-6.5/lib64/libm.so.6", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or directory)
open("/lib/x86_64-linux-gnu/libm.so.6", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0pU\0\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0644, st_size=1030512, ...}) = 0
mmap(NULL, 3125544, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x2b430e250000
mprotect(0x2b430e34b000, 2093056, PROT_NONE) = 0
mmap(0x2b430e54a000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0xfa000) = 0x2b430e54a000
close(3)                                = 0
open("tls/x86_64/libgcc_s.so.1", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
open("tls/libgcc_s.so.1", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
open("x86_64/libgcc_s.so.1", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
open("libgcc_s.so.1", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
open("/usr/local/lib/libgcc_s.so.1", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
open("/usr/local/cuda-6.0/lib64/libgcc_s.so.1", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
open("/usr/lib/atlas-base/libgcc_s.so.1", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
open("/usr/local/cuda-6.5/lib64/libgcc_s.so.1", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or directory)
open("/lib/x86_64-linux-gnu/libgcc_s.so.1", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\320(\0\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0644, st_size=88384, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x2b430d6f4000
mmap(NULL, 2184216, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x2b430e550000
mprotect(0x2b430e565000, 2093056, PROT_NONE) = 0
mmap(0x2b430e764000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x14000) = 0x2b430e764000
close(3)                                = 0
open("tls/x86_64/libc.so.6", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
open("tls/libc.so.6", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
open("x86_64/libc.so.6", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
open("libc.so.6", O_RDONLY|O_CLOEXEC)   = -1 ENOENT (No such file or directory)
open("/usr/local/lib/libc.so.6", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
open("/usr/local/cuda-6.0/lib64/libc.so.6", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
open("/usr/lib/atlas-base/libc.so.6", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
open("/usr/local/cuda-6.5/lib64/libc.so.6", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or directory)
open("/lib/x86_64-linux-gnu/libc.so.6", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\200\30\2\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=1815224, ...}) = 0
mmap(NULL, 3929304, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x2b430e768000
mprotect(0x2b430e91d000, 2097152, PROT_NONE) = 0
mmap(0x2b430eb1d000, 24576, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x1b5000) = 0x2b430eb1d000
mmap(0x2b430eb23000, 17624, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x2b430eb23000
close(3)                                = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x2b430d6f5000
mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x2b430d6f6000
arch_prctl(ARCH_SET_FS, 0x2b430d6f6340) = 0
mprotect(0x2b430eb1d000, 16384, PROT_READ) = 0
mprotect(0x2b430e764000, 4096, PROT_READ) = 0
mprotect(0x2b430e54a000, 4096, PROT_READ) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x2b430d71a000
mprotect(0x2b430e231000, 32768, PROT_READ) = 0
mprotect(0x2b430dd3f000, 4096, PROT_READ) = 0
mprotect(0x2b430df4e000, 4096, PROT_READ) = 0
mprotect(0x2b430db22000, 4096, PROT_READ) = 0
mprotect(0x2b430d91a000, 4096, PROT_READ) = 0
munmap(0x2b430d720000, 115443)          = 0
set_tid_address(0x2b430d6f6610)         = 2023
set_robust_list(0x2b430d6f6620, 0x18)   = 0
futex(0x7fff1cb31e1c, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 1, NULL, 2b430d6f6340) = -1 EAGAIN (Resource temporarily unavailable)
rt_sigaction(SIGRTMIN, {0x2b430db2e750, [], SA_RESTORER|SA_SIGINFO, 0x2b430db37cb0}, NULL, 8) = 0
rt_sigaction(SIGRT_1, {0x2b430db2e7e0, [], SA_RESTORER|SA_RESTART|SA_SIGINFO, 0x2b430db37cb0}, NULL, 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
getrlimit(RLIMIT_STACK, {rlim_cur=RLIM_INFINITY, rlim_max=RLIM_INFINITY}) = 0
futex(0x2b430e23bed0, FUTEX_WAKE_PRIVATE, 2147483647) = 0
brk(0)                                  = 0x1af8000
brk(0x1b19000)                          = 0x1b19000
fstat(1, {st_mode=S_IFREG|0644, st_size=28120, ...}) = 0
mmap(NULL, 1048576, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x2b430d71b000
statfs("/dev/shm/", {f_type=0x1021994, f_bsize=4096, f_blocks=4116014, f_bfree=4116014, f_bavail=4116014, f_files=4116014, f_ffree=4116011, f_fsid={0, 0}, f_namelen=255, f_frsize=4096}) = 0
futex(0x2b430df4f360, FUTEX_WAKE_PRIVATE, 2147483647) = 0
open("/dev/shm/2023", O_RDWR|O_NOFOLLOW|O_CLOEXEC) = -1 ENOENT (No such file or directory)
open("/dev/shm/2023", O_RDWR|O_NOFOLLOW|O_CLOEXEC) = -1 ENOENT (No such file or directory)
open("/dev/shm/2023", O_RDWR|O_CREAT|O_EXCL|O_TRUNC|O_NOFOLLOW|O_CLOEXEC, 0600) = 3
ftruncate(3, 262176)                    = 0
mmap(NULL, 262176, PROT_READ|PROT_WRITE, MAP_SHARED, 3, 0) = 0x2b430d820000
open("/dev/shm/2023", O_RDWR|O_NOFOLLOW|O_CLOEXEC) = 4
lseek(4, 0, SEEK_END)                   = 262176
mmap(NULL, 262176, PROT_READ|PROT_WRITE, MAP_SHARED, 4, 0) = 0x2b430d868000
write(1, "========= CUDA-MEMCHECK\n========"..., 112========= CUDA-MEMCHECK
========= Could not start the application (14)
========= No CUDA-MEMCHECK results found
) = 112
exit_group(0)                           = ?

Answer 1

这似乎是cuda-memcheck中的内部错误。如果$TMPDIR的长度大于或等于30个字符，似乎就会发生这种情况。我猜他们用于存储临时文件名的内部缓冲区太短了。

作为一种解决方法，我现在这样做：

ln -s $TMPDIR /tmp/cuda-$PPID
export TMPDIR=/tmp/cuda-$PPID

cuda-memcheck：无法启动应用程序（14）

1 个答案: