关于openmpi的软件的使用
openmpi是并行的运行程序，配置的时候需要注意下
增加并行的运行节点 [root@lab8105 ~]# vim /etc/openmpi-x86_64/openmpi-default-hostfile 添加 lab8105 slots=1 lab8106 slots=1 特别注意加slots 这个是配置权重的，如果不配置，第一条有默认权重，就无法在数目小时进行均衡操作 检查是否配置成功，np为操作线程数 [root@lab8105 ~]# mpirun --allow-run-as-root -np 2 hostname lab8105 lab8106 如果想单机执行多进程，可以用-host指定主机 [root@lab8105 ~]# mpirun -host lab8105 --allow-run-as-root -np 2 hostname |
单机下多进程测试
2 task on 1 node [root@lab8105 ~]# mpirun -host lab8105 --allow-run-as-root -np 2 mdtest -I 10 -z 5 -b 2 -d /mnt/zptest/ -t -c 2 -- started at 01/27/2015 21:06:23 -- mdtest-1.9.3 was launched with 2 total task(s) on 1 node(s) Command line used: mdtest -I 10 -z 5 -b 2 -d /mnt/zptest/ -t -c 2 Path: /mnt/zptest FS: 6.5 TiB Used FS: 59.2% Inodes: 0.6 Mi Used Inodes: 100.0% 2 tasks, 1260 files/directories SUMMARY: (of 1 iterations) Operation Max Min Mean Std Dev --------- --- --- ---- ------- Directory creation: 312.088 312.088 312.088 0.000 Directory stat : 73447.245 73447.245 73447.245 0.000 Directory removal : 255.755 255.755 255.755 0.000 File creation : 638.824 638.824 638.824 0.000 File stat : 86747.366 86747.366 86747.366 0.000 File read : 84434.232 84434.232 84434.232 0.000 File removal : 207.545 207.545 207.545 0.000 Tree creation : 39.062 39.062 39.062 0.000 Tree removal : 46.971 46.971 46.971 0.000 -- finished at 01/27/2015 21:06:43 -- |
多机并发测试
如下显示的2 task on 2 node [root@lab8105 ~]# mpirun --allow-run-as-root -np 2 mdtest -I 10 -z 5 -b 2 -d /mnt/zptest/ -t -c 2 -- started at 01/27/2015 21:04:35 -- mdtest-1.9.3 was launched with 2 total task(s) on 2 node(s) Command line used: mdtest -I 10 -z 5 -b 2 -d /mnt/zptest/ -t -c 2 Path: /mnt/zptest FS: 6.5 TiB Used FS: 59.2% Inodes: 0.6 Mi Used Inodes: 100.0% 2 tasks, 1260 files/directories SUMMARY: (of 1 iterations) Operation Max Min Mean Std Dev --------- --- --- ---- ------- Directory creation: 312.355 312.355 312.355 0.000 Directory stat : 1611.000 1611.000 1611.000 0.000 Directory removal : 127.333 127.333 127.333 0.000 File creation : 309.295 309.295 309.295 0.000 File stat : 113257.534 113257.534 113257.534 0.000 File read : 203458.057 203458.057 203458.057 0.000 File removal : 98.523 98.523 98.523 0.000 Tree creation : 36.566 36.566 36.566 0.000 Tree removal : 20.191 20.191 20.191 0.000 -- finished at 01/27/2015 21:05:12 -- |
关于目录生成的问题：
这个是 -z 2 -b 3
[root@lab8106 mnt]# ls mdtest2/#test-dir.0/mdtest_tree.0/
mdtest_tree.1 mdtest_tree.2 mdtest_tree.3
[root@lab8106 mnt]# ls mdtest2/#test-dir.0/mdtest_tree.0/mdtest_tree.1/
mdtest_tree.4 mdtest_tree.5 mdtest_tree.6
这个是以这个目录开始的
[root@lab8106 mnt]# ls mdtest2/#test-dir.0/mdtest_tree.0/
