你这个很可能是因为在链接的时候没有加上xMath库？

之前代码中，我指定了xMath的路径寻找路径，从而导致了上述错误。正确的使用xMath应该让系统自己寻找合适的xMath库。

经过超算中心老师的指导，我把提交程序修改为

# prepare
clear
rm *.o
rm test_xMath

# compile master core program
sw5cc -host -c cg.c
sw5cc -host -c spmv.c
sw5cc -host -c cg.c
sw5cc -host -c SunwayAthread.c
sw5CC -host -c main.cpp

# link
# xMath path should not be assigned, should automatically find by system
mpic++ -hybrid -o test_xMath main.o cg.o spmv.o SunwayAthread.o -lxMath_manycore -lfortran -lffio

# submit
bsub -I -b -N 1 -q q_sw_expr -cgsp 64 ./test_xMath

就可以解决问题。

太赞了！！！感谢大佬。

老师好：
我已经看到了有关于xMath出错的讨论。

• http://bbs.nsccwx.cn/topic/278/请问如何在c-的代码中链接xmath库

我也想用链接xMath和我的C++程序，但是使用上述链接的办法不能正常使用。

尝试1

命令

sw5cc -hybrid -o test_xMath main.o cg.o spmv.o SunwayAthread.o -L ${xMath_path} -lxMath -lstdc++

报错

/usr/sw-mpp/swcc/sw5gcc-binary/lib/libxMath.a(dcg_check.o): In function `dcg_check':/home/export/online1/systest/swzky/ABC123/xMath_manycore_v1.0/src/sparse_manycore/dcg_check.f:18: undefined reference to `_OPEN'
:/home/export/online1/systest/swzky/ABC123/xMath_manycore_v1.0/src/sparse_manycore/dcg_check.f:18: undefined reference to `_OPEN'
:/home/export/online1/systest/swzky/ABC123/xMath_manycore_v1.0/src/sparse_manycore/dcg_check.f:37: undefined reference to `_FWF'
:/home/export/online1/systest/swzky/ABC123/xMath_manycore_v1.0/src/sparse_manycore/dcg_check.f:37: undefined reference to `_FWF'
:/home/export/online1/systest/swzky/ABC123/xMath_manycore_v1.0/src/sparse_manycore/dcg_check.f:40: undefined reference to `_FWF'
:/home/export/online1/systest/swzky/ABC123/xMath_manycore_v1.0/src/sparse_manycore/dcg_check.f:40: undefined reference to `_FWF'
:/home/export/online1/systest/swzky/ABC123/xMath_manycore_v1.0/src/sparse_manycore/dcg_check.f:41: undefined reference to `_FWF'
/usr/sw-mpp/swcc/sw5gcc-binary/lib/libxMath.a(dcg_check.o):/home/export/online1/systest/swzky/ABC123/xMath_manycore_v1.0/src/sparse_manycore/dcg_check.f:41: more undefined references to `_FWF' follow
collect2: ld returned 1 exit status

尝试2

命令

sw5cc -hybrid -o test_xMath main.o cg.o spmv.o SunwayAthread.o -L ${xMath_path} -lxMath -lstdc++ -lffio -lfortran

报错

/usr/sw-mpp/swcc/lib/gcc-lib/sw_64-swcc-linux/5.421-sw-500/lib/libfortran.a(opn.o): In function `findmatch': undefined reference to `_string_cmp'
/usr/sw-mpp/swcc/lib/gcc-lib/sw_64-swcc-linux/5.421-sw-500/lib/libfortran.a(opn.o): In function `findmatch': undefined reference to `_string_cmp'
/usr/sw-mpp/swcc/lib/gcc-lib/sw_64-swcc-linux/5.421-sw-500/lib/libfortran.a(opn.o): In function `__OPN': undefined reference to `__io_byteswap'
/usr/sw-mpp/swcc/lib/gcc-lib/sw_64-swcc-linux/5.421-sw-500/lib/libfortran.a(opn.o): In function `__OPN': undefined reference to `__io_byteswap'
/usr/sw-mpp/swcc/lib/gcc-lib/sw_64-swcc-linux/5.421-sw-500/lib/libfortran.a(wf90.o): In function `_FWF': undefined reference to `_string_cmp'
/usr/sw-mpp/swcc/lib/gcc-lib/sw_64-swcc-linux/5.421-sw-500/lib/libfortran.a(wf90.o): In function `_FWF': undefined reference to `_string_cmp'
/usr/sw-mpp/swcc/lib/gcc-lib/sw_64-swcc-linux/5.421-sw-500/lib/libfortran.a(wf90.o): In function `_FWF': undefined reference to `_string_cmp'
/usr/sw-mpp/swcc/lib/gcc-lib/sw_64-swcc-linux/5.421-sw-500/lib/libfortran.a(wf90.o): In function `_FWF': undefined reference to `_string_cmp'
/usr/sw-mpp/swcc/lib/gcc-lib/sw_64-swcc-linux/5.421-sw-500/lib/libfortran.a(wrfmt.o): In function `_wrfmt': undefined reference to `_unpack'
/usr/sw-mpp/swcc/lib/gcc-lib/sw_64-swcc-linux/5.421-sw-500/lib/libfortran.a(wrfmt.o): In function `_wrfmt': undefined reference to `_unpack'
/usr/sw-mpp/swcc/lib/gcc-lib/sw_64-swcc-linux/5.421-sw-500/lib/libfortran.a(wrfmt.o): In function `_wrfmt': undefined reference to `_unpack'
/usr/sw-mpp/swcc/lib/gcc-lib/sw_64-swcc-linux/5.421-sw-500/lib/libfortran.a(wrfmt.o): In function `_wrfmt': undefined reference to `_unpack'
/usr/sw-mpp/swcc/lib/gcc-lib/sw_64-swcc-linux/5.421-sw-500/lib/libfortran.a(wrfmt.o): In function `_wrfmt': undefined reference to `_unpack'
/usr/sw-mpp/swcc/lib/gcc-lib/sw_64-swcc-linux/5.421-sw-500/lib/libfortran.a(wrfmt.o): more undefined references to `_unpack' follow
/usr/sw-mpp/swcc/lib/gcc-lib/sw_64-swcc-linux/5.421-sw-500/lib/libfortran.a(ferror.o): In function `_ferr': undefined reference to `_lmessage'
/usr/sw-mpp/swcc/lib/gcc-lib/sw_64-swcc-linux/5.421-sw-500/lib/libfortran.a(ferror.o): In function `_ferr': undefined reference to `_lmessage'
/usr/sw-mpp/swcc/lib/gcc-lib/sw_64-swcc-linux/5.421-sw-500/lib/libfortran.a(getdcparam.o): In function `_get_dc_param': undefined reference to `__fndc_ncfunc'
/usr/sw-mpp/swcc/lib/gcc-lib/sw_64-swcc-linux/5.421-sw-500/lib/libfortran.a(getdcparam.o): In function `_get_dc_param': undefined reference to `__fndc_f77sz'
...

尝试3

命令

sw5CC -hybrid -o test_xMath main.o cg.o spmv.o SunwayAthread.o -L ${xMath_path} -lxMath -lstdc++ -lffio -lfortran

报错

CC ERROR: cannot exec /usr/sw-mpp/swcc/sw5gcc-binary/bin/sw5g++: No such file or directory

尝试4

命令：

mpiCC -hybrid -o test_xMath main.o cg.o spmv.o SunwayAthread.o -L ${xMath_path} -lxMath -lstdc++ -lffio -lfortran

报错：

/usr/sw-mpp/swcc/lib/gcc-lib/sw_64-swcc-linux/5.421-sw-500/lib/libfortran.a(opn.o): In function `findmatch': undefined reference to `_string_cmp'
/usr/sw-mpp/swcc/lib/gcc-lib/sw_64-swcc-linux/5.421-sw-500/lib/libfortran.a(opn.o): In function `findmatch': undefined reference to `_string_cmp'
/usr/sw-mpp/swcc/lib/gcc-lib/sw_64-swcc-linux/5.421-sw-500/lib/libfortran.a(opn.o): In function `__OPN': undefined reference to `__io_byteswap'
/usr/sw-mpp/swcc/lib/gcc-lib/sw_64-swcc-linux/5.421-sw-500/lib/libfortran.a(opn.o): In function `__OPN': undefined reference to `__io_byteswap'
/usr/sw-mpp/swcc/lib/gcc-lib/sw_64-swcc-linux/5.421-sw-500/lib/libfortran.a(wf90.o): In function `_FWF': undefined reference to `_string_cmp'
/usr/sw-mpp/swcc/lib/gcc-lib/sw_64-swcc-linux/5.421-sw-500/lib/libfortran.a(wf90.o): In function `_FWF': undefined reference to `_string_cmp'
/usr/sw-mpp/swcc/lib/gcc-lib/sw_64-swcc-linux/5.421-sw-500/lib/libfortran.a(wf90.o): In function `_FWF': undefined reference to `_string_cmp'
/usr/sw-mpp/swcc/lib/gcc-lib/sw_64-swcc-linux/5.421-sw-500/lib/libfortran.a(wf90.o): In function `_FWF': undefined reference to `_string_cmp'
/usr/sw-mpp/swcc/lib/gcc-lib/sw_64-swcc-linux/5.421-sw-500/lib/libfortran.a(wrfmt.o): In function `_wrfmt': undefined reference to `_unpack'
/usr/sw-mpp/swcc/lib/gcc-lib/sw_64-swcc-linux/5.421-sw-500/lib/libfortran.a(wrfmt.o): In function `_wrfmt': undefined reference to `_unpack'
/usr/sw-mpp/swcc/lib/gcc-lib/sw_64-swcc-linux/5.421-sw-500/lib/libfortran.a(wrfmt.o): In function `_wrfmt': undefined reference to `_unpack'
/usr/sw-mpp/swcc/lib/gcc-lib/sw_64-swcc-linux/5.421-sw-500/lib/libfortran.a(wrfmt.o): In function `_wrfmt': undefined reference to `_unpack'
/usr/sw-mpp/swcc/lib/gcc-lib/sw_64-swcc-linux/5.421-sw-500/lib/libfortran.a(wrfmt.o): In function `_wrfmt': undefined reference to `_unpack'
...

请问老师有什么好的建议嘛？谢谢！

老师好：

我想要一口气提交一大堆任务，例如 a1.out, a2.out, a3.out ... a100.out.每一个任务的计算时间非常短，只需要1ms.

这一系列的任务被是软件的单元测试，需要反复，快速的执行。

我现在的提交方式是

bsub -I -b -N 1 -q q_sw_expr -cgsp 64 ./a1.out
bsub -I -b -N 1 -q q_sw_expr -cgsp 64 ./a2.out
bsub -I -b -N 1 -q q_sw_expr -cgsp 64 ./a3.out
...
bsub -I -b -N 1 -q q_sw_expr -cgsp 64 ./a100.out

这种方式大量的时间都花在了集群的任务调度上面(申请任务，等待分配资源，分配资源，计算，任务完成，释放资源)，请问有没有什么方法一口气提交任务并快速执行？谢谢。