Mvapich2（带IB）计算后的奇怪信息

Question

我正在使用 mvapich2 2.2 运行示例程序 (hello-world & pi)。 计算后，我看到了类似于调试的信息（在错误线程中）。

输出线程

Process 2 of 5 is on 37eff7e817ee
Process 0 of 5 is on cb1479885879
Process 4 of 5 is on 6511b189f06b
Process 1 of 5 is on 6511b189f06b
Process 3 of 5 is on cb1479885879
pi is approximately 3.1415926544231230, Error is 0.0000000008333298
wall clock time = 0.051757

错误线程

[2] 40 at [0x0000000001d8dd28], pid/ch3/channels/mrail/src/gen2/rdma_iba_priv.c[1123]
[2] 136 at [0x0000000001d8dbf8], pid/ch3/channels/mrail/src/gen2/rdma_iba_priv.c[1110]
[4] 40 at [0x0000000000df3868], pid/ch3/channels/mrail/src/gen2/rdma_iba_priv.c[1123]
[4] 136 at [0x0000000000df3738], pid/ch3/channels/mrail/src/gen2/rdma_iba_priv.c[1110]
[3] 40 at [0x0000000001bf32c8], pid/ch3/channels/mrail/src/gen2/rdma_iba_priv.c[1123]
[3] 136 at [0x0000000001bf3198], pid/ch3/channels/mrail/src/gen2/rdma_iba_priv.c[1110]
[0] 40 at [0x00000000012ebda8], pid/ch3/channels/mrail/src/gen2/rdma_iba_priv.c[1123]
[0] 136 at [0x00000000013029b8], pid/ch3/channels/mrail/src/gen2/rdma_iba_priv.c[1110]
[1] 40 at [0x0000000001514788], pid/ch3/channels/mrail/src/gen2/rdma_iba_priv.c[1123]
[1] 136 at [0x0000000001514658], pid/ch3/channels/mrail/src/gen2/rdma_iba_priv.c[1110]

环境：

• CentOS 7；
• Mellanox MT25204;
• mvapich2-2.2（从 yum 安装）。

screenshot

如何禁用它？

Answer 1

这些打印是由 MPI 库或应用程序本身的内存泄漏引起的。它还表明您正在使用 MVAPICH2 的调试版本。如果您自己构建了 MVAPICH2，请从 configure 中删除选项 --enable-g=all --enable-fast=none --disable-fast。这也将提高你的表现。