<div dir="ltr">Wei-keng,<div><br></div><div>Here is the output from my run with PNETCDF_SAFE_MODE=1 on Lustre:</div><div><br></div><div><div>[root@Jet:fe8 FLASH-IO]# mpiexec.hydra -env PNETCDF_SAFE_MODE 1 -np 4 ./flash_benchmark_io /lfs2/jetmgmt/Craig.Tierney/d1//flash_io_test_</div><div>Warning (inconsistent metadata): variable lrefine's begin (root=1048576, local=3072)</div><div>Warning (inconsistent metadata): variable nodetype's begin (root=2097152, local=4608)</div><div>Warning (inconsistent metadata): variable gid's begin (root=3145728, local=6144)</div><div>Warning (inconsistent metadata): variable coordinates's begin (root=4194304, local=25600)</div><div>Warning (inconsistent metadata): variable blocksize's begin (root=5242880, local=33792)</div><div>Warning (inconsistent metadata): variable bndbox's begin (root=6291456, local=41984)</div><div>Warning (inconsistent metadata): variable dens's begin (root=7340032, local=57856)</div><div>Warning (inconsistent metadata): variable velx's begin (root=18874368, local=10641920)</div><div>Warning (inconsistent metadata): variable lrefine's begin (root=1048576, local=3072)</div><div>Warning (inconsistent metadata): variable nodetype's begin (root=2097152, local=4608)</div><div>Warning (inconsistent metadata): variable gid's begin (root=3145728, local=6144)</div><div>Warning (inconsistent metadata): variable coordinates's begin (root=4194304, local=25600)</div><div>Warning (inconsistent metadata): variable blocksize's begin (root=5242880, local=33792)</div><div>Warning (inconsistent metadata): variable bndbox's begin (root=6291456, local=41984)</div><div>Warning (inconsistent metadata): variable dens's begin (root=7340032, local=57856)</div><div>Warning (inconsistent metadata): variable velx's begin (root=18874368, local=10641920)</div><div>Warning (inconsistent metadata): variable vely's begin (root=30408704, local=21225984)</div><div>Warning (inconsistent metadata): variable velz's begin (root=41943040, local=31810048)</div><div>Warning (inconsistent metadata): variable pres's begin (root=53477376, local=42394112)</div><div>Warning (inconsistent metadata): variable ener's begin (root=65011712, local=52978176)</div><div>Warning (inconsistent metadata): variable temp's begin (root=76546048, local=63562240)</div><div>Warning (inconsistent metadata): variable gamc's begin (root=88080384, local=74146304)</div><div>Warning (inconsistent metadata): variable game's begin (root=99614720, local=84730368)</div><div>Warning (inconsistent metadata): variable enuc's begin (root=111149056, local=95314432)</div><div>Warning (inconsistent metadata): variable gpot's begin (root=122683392, local=105898496)</div><div>Warning (inconsistent metadata): variable f1__'s begin (root=134217728, local=116482560)</div><div>Warning (inconsistent metadata): variable f2__'s begin (root=145752064, local=127066624)</div><div>Warning (inconsistent metadata): variable f3__'s begin (root=157286400, local=137650688)</div><div>Warning (inconsistent metadata): variable lrefine's begin (root=1048576, local=3072)</div><div>Warning (inconsistent metadata): variable nodetype's begin (root=2097152, local=4608)</div><div>Warning (inconsistent metadata): variable gid's begin (root=3145728, local=6144)</div><div>Warning (inconsistent metadata): variable coordinates's begin (root=4194304, local=25600)</div><div>Warning (inconsistent metadata): variable blocksize's begin (root=5242880, local=33792)</div><div>Warning (inconsistent metadata): variable bndbox's begin (root=6291456, local=41984)</div><div>Warning (inconsistent metadata): variable dens's begin (root=7340032, local=57856)</div><div>Warning (inconsistent metadata): variable velx's begin (root=18874368, local=10641920)</div><div>Warning (inconsistent metadata): variable vely's begin (root=30408704, local=21225984)</div><div>Warning (inconsistent metadata): variable velz's begin (root=41943040, local=31810048)</div><div>Warning (inconsistent metadata): variable pres's begin (root=53477376, local=42394112)</div><div>Warning (inconsistent metadata): variable ener's begin (root=65011712, local=52978176)</div><div>Warning (inconsistent metadata): variable temp's begin (root=76546048, local=63562240)</div><div>Warning (inconsistent metadata): variable gamc's begin (root=88080384, local=74146304)</div><div>Warning (inconsistent metadata): variable game's begin (root=99614720, local=84730368)</div><div>Warning (inconsistent metadata): variable enuc's begin (root=111149056, local=95314432)</div><div>Warning (inconsistent metadata): variable gpot's begin (root=122683392, local=105898496)</div><div>Warning (inconsistent metadata): variable f1__'s begin (root=134217728, local=116482560)</div><div>Warning (inconsistent metadata): variable f2__'s begin (root=145752064, local=127066624)</div><div>Warning (inconsistent metadata): variable f3__'s begin (root=157286400, local=137650688)</div><div>Warning (inconsistent metadata): variable f4__'s begin (root=168820736, local=148234752)</div><div>Warning (inconsistent metadata): variable f5__'s begin (root=180355072, local=158818816)</div><div>Warning (inconsistent metadata): variable f6__'s begin (root=191889408, local=169402880)</div><div>Warning (inconsistent metadata): variable vely's begin (root=30408704, local=21225984)</div><div>Warning (inconsistent metadata): variable velz's begin (root=41943040, local=31810048)</div><div>Warning (inconsistent metadata): variable pres's begin (root=53477376, local=42394112)</div><div>Warning (inconsistent metadata): variable ener's begin (root=65011712, local=52978176)</div><div>Warning (inconsistent metadata): variable temp's begin (root=76546048, local=63562240)</div><div>Warning (inconsistent metadata): variable gamc's begin (root=88080384, local=74146304)</div><div>Warning (inconsistent metadata): variable game's begin (root=99614720, local=84730368)</div><div>Warning (inconsistent metadata): variable enuc's begin (root=111149056, local=95314432)</div><div>Warning (inconsistent metadata): variable gpot's begin (root=122683392, local=105898496)</div><div>Warning (inconsistent metadata): variable f1__'s begin (root=134217728, local=116482560)</div><div>Warning (inconsistent metadata): variable f2__'s begin (root=145752064, local=127066624)</div><div>Warning (inconsistent metadata): variable f3__'s begin (root=157286400, local=137650688)</div><div>Warning (inconsistent metadata): variable f4__'s begin (root=168820736, local=148234752)</div><div>Warning (inconsistent metadata): variable f5__'s begin (root=180355072, local=158818816)</div><div>Warning (inconsistent metadata): variable f6__'s begin (root=191889408, local=169402880)</div><div>Warning (inconsistent metadata): variable f7__'s begin (root=203423744, local=179986944)</div><div>Warning (inconsistent metadata): variable f8__'s begin (root=214958080, local=190571008)</div><div>Warning (inconsistent metadata): variable f9__'s begin (root=226492416, local=201155072)</div><div>Warning (inconsistent metadata): variable f10_'s begin (root=238026752, local=211739136)</div><div>Warning (inconsistent metadata): variable f11_'s begin (root=249561088, local=222323200)</div><div>Warning (inconsistent metadata): variable f12_'s begin (root=261095424, local=232907264)</div><div>Warning (inconsistent metadata): variable f13_'s begin (root=272629760, local=243491328)</div><div>Warning (inconsistent metadata): variable f4__'s begin (root=168820736, local=148234752)</div><div>Warning (inconsistent metadata): variable f5__'s begin (root=180355072, local=158818816)</div><div>Warning (inconsistent metadata): variable f6__'s begin (root=191889408, local=169402880)</div><div>Warning (inconsistent metadata): variable f7__'s begin (root=203423744, local=179986944)</div><div>Warning (inconsistent metadata): variable f8__'s begin (root=214958080, local=190571008)</div><div>Warning (inconsistent metadata): variable f9__'s begin (root=226492416, local=201155072)</div><div>Warning (inconsistent metadata): variable f10_'s begin (root=238026752, local=211739136)</div><div>Warning (inconsistent metadata): variable f11_'s begin (root=249561088, local=222323200)</div><div>Warning (inconsistent metadata): variable f12_'s begin (root=261095424, local=232907264)</div><div>Warning (inconsistent metadata): variable f13_'s begin (root=272629760, local=243491328)</div><div>Warning (inconsistent metadata): variable f7__'s begin (root=203423744, local=179986944)</div><div>Warning (inconsistent metadata): variable f8__'s begin (root=214958080, local=190571008)</div><div>Warning (inconsistent metadata): variable f9__'s begin (root=226492416, local=201155072)</div><div>Warning (inconsistent metadata): variable f10_'s begin (root=238026752, local=211739136)</div><div>Warning (inconsistent metadata): variable f11_'s begin (root=249561088, local=222323200)</div><div>Warning (inconsistent metadata): variable f12_'s begin (root=261095424, local=232907264)</div><div>Warning (inconsistent metadata): variable f13_'s begin (root=272629760, local=243491328)</div><div> Here: -250</div><div> Here: -262</div><div> Here: -262</div><div> Here: -262</div><div> nfmpi_enddefFile header is inconsistent among processes</div><div> nfmpi_enddef</div><div> (Internal error) beginning file offset of this variable is inconsistent among p</div><div> r</div><div> nfmpi_enddef</div><div> (Internal error) beginning file offset of this variable is inconsistent among p</div><div> r</div><div> nfmpi_enddef</div><div> (Internal error) beginning file offset of this variable is inconsistent among p</div><div> r</div><div>[cli_1]: aborting job:</div><div>application called MPI_Abort(MPI_COMM_WORLD, -1) - process 1</div><div>[cli_0]: [cli_2]: aborting job:</div><div>application called MPI_Abort(MPI_COMM_WORLD, -1) - process 2</div><div>[cli_3]: aborting job:</div><div>application called MPI_Abort(MPI_COMM_WORLD, -1) - process 3</div><div>aborting job:</div><div>application called MPI_Abort(MPI_COMM_WORLD, -1) - process 0</div></div><div><br></div><div>Craig</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Mon, Sep 21, 2015 at 1:21 PM, Wei-keng Liao <span dir="ltr"><<a href="mailto:wkliao@eecs.northwestern.edu" target="_blank">wkliao@eecs.northwestern.edu</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><br>
It is strange that the test failed for Lustre.<br>
<br>
The error message says some variables defined across MPI processes are not consistent.<br>
Could you run this benchmark with safe mode on? by setting the environment variable<br>
PNETCDF_SAFE_MODE to 1 before the run. This will print more error messages, such as<br>
which variables are inconsistent and at what offsets.<br>
<span class="HOEnZb"><font color="#888888"><br>
<br>
Wei-keng<br>
</font></span><div class="HOEnZb"><div class="h5"><br>
On Sep 21, 2015, at 1:31 PM, Craig Tierney - NOAA Affiliate wrote:<br>
<br>
> Rob and Wei-keng,<br>
><br>
> Thanks for you help on this problem. Rob - The patch seems to work. I had to hand apply it but now the pnetcdf tests (mostly) complete successfully. The FLASH-IO benchmark is failing when Lustre is used. It completes successfully when Panasas is used. The error code that is returned by nfmpi_enddef is -262. The description for this error is:<br>
><br>
> #define NC_EMULTIDEFINE_VAR_BEGIN (-262) /**< inconsistent variable file begin offset (internal use) */<br>
><br>
> [root@Jet:fe7 FLASH-IO]# mpiexec.hydra -n 4 ./flash_benchmark_io /pan2/jetmgmt/Craig.Tierney/pan_flash_io_test_<br>
> Here: 0<br>
> Here: 0<br>
> Here: 0<br>
> Here: 0<br>
> number of guards : 4<br>
> number of blocks : 80<br>
> number of variables : 24<br>
> checkpoint time : 12.74 sec<br>
> max header : 0.88 sec<br>
> max unknown : 11.83 sec<br>
> max close : 0.53 sec<br>
> I/O amount : 242.30 MiB<br>
> plot no corner : 2.38 sec<br>
> max header : 0.59 sec<br>
> max unknown : 1.78 sec<br>
> max close : 0.22 sec<br>
> I/O amount : 20.22 MiB<br>
> plot corner : 2.52 sec<br>
> max header : 0.81 sec<br>
> max unknown : 1.51 sec<br>
> max close : 0.96 sec<br>
> I/O amount : 24.25 MiB<br>
> -------------------------------------------------------<br>
> File base name : /pan2/jetmgmt/Craig.Tierney/pan_flash_io_test_<br>
> file striping count : 0<br>
> file striping size : 301346992 bytes<br>
> Total I/O amount : 286.78 MiB<br>
> -------------------------------------------------------<br>
> nproc array size exec (sec) bandwidth (MiB/s)<br>
> 4 16 x 16 x 16 17.64 16.26<br>
><br>
><br>
> [root@Jet:fe7 FLASH-IO]# mpiexec.hydra -n 4 ./flash_benchmark_io /lfs2/jetmgmt/Craig.Tierney/lfs_flash_io_test_<br>
> Here: -262<br>
> Here: -262<br>
> Here: -262<br>
> nfmpi_enddef<br>
> (Internal error) beginning file offset of this variable is inconsistent among p<br>
> r<br>
> nfmpi_enddef<br>
> (Internal error) beginning file offset of this variable is inconsistent among p<br>
> r<br>
> nfmpi_enddef<br>
> (Internal error) beginning file offset of this variable is inconsistent among p<br>
> r<br>
> Here: 0<br>
> [cli_1]: aborting job:<br>
> application called MPI_Abort(MPI_COMM_WORLD, -1) - process 1<br>
> [cli_3]: [cli_2]: aborting job:<br>
> application called MPI_Abort(MPI_COMM_WORLD, -1) - process 3<br>
> aborting job:<br>
> application called MPI_Abort(MPI_COMM_WORLD, -1) - process 2<br>
><br>
> ===================================================================================<br>
> = BAD TERMINATION OF ONE OF YOUR APPLICATION PROCESSES<br>
> = PID 16702 RUNNING AT fe7<br>
> = EXIT CODE: 255<br>
> = CLEANING UP REMAINING PROCESSES<br>
> = YOU CAN IGNORE THE BELOW CLEANUP MESSAGES<br>
> ===================================================================================<br>
><br>
> Thanks,<br>
> Craig<br>
><br>
><br>
> On Mon, Sep 21, 2015 at 8:30 AM, Rob Latham <<a href="mailto:robl@mcs.anl.gov">robl@mcs.anl.gov</a>> wrote:<br>
><br>
><br>
> On 09/20/2015 03:44 PM, Craig Tierney - NOAA Affiliate wrote:<br>
> Wei-keng,<br>
><br>
> I tried your test code on a different system, and I found it worked with<br>
> Intel+mvapich2 (2.1rc1). That system was using Panasas and I was<br>
> testing on Lustre. I then tried Panasas on the original machine<br>
> (supports both Panasas and Lustre) and I got the correct behavior.<br>
><br>
> So the problem somehow related to Lustre. We are using the 2.5.37.ddn<br>
> client. Unless you have an obvious answer, I will open this with DDN<br>
> tomorrow.<br>
><br>
><br>
> Ah, bet I know why this is!<br>
><br>
> the Lustre driver and (some versions of the) Panasas driver set their fs-specific hints by opening the file, setting some ioctls, then continuing on without deleting the file.<br>
><br>
> In the common case, when we expect the file to show up, no one notices or cares, but in MPI_MODE_EXCL or some other restrictive flags, the file gets created when we did not expect it to -- and that's part of the reason this bug lived on so long.<br>
><br>
> I fixed this by moving file manipulations out of the hint parsing path and into the open path (after we check permissions and flags)<br>
><br>
> Relevant commit: <a href="https://trac.mpich.org/projects/mpich/changeset/92f1c69f0de87f9" rel="noreferrer" target="_blank">https://trac.mpich.org/projects/mpich/changeset/92f1c69f0de87f9</a><br>
><br>
> See more details from Darshan, OpenMPI, and MPICH here:<br>
> - <a href="https://trac.mpich.org/projects/mpich/ticket/2261" rel="noreferrer" target="_blank">https://trac.mpich.org/projects/mpich/ticket/2261</a><br>
> - <a href="https://github.com/open-mpi/ompi/issues/158" rel="noreferrer" target="_blank">https://github.com/open-mpi/ompi/issues/158</a><br>
> - <a href="http://lists.mcs.anl.gov/pipermail/darshan-users/2015-February/000256.html" rel="noreferrer" target="_blank">http://lists.mcs.anl.gov/pipermail/darshan-users/2015-February/000256.html</a><br>
><br>
> ==rob<br>
><br>
><br>
> Thanks,<br>
> Craig<br>
><br>
> On Sun, Sep 20, 2015 at 2:36 PM, Craig Tierney - NOAA Affiliate<br>
> <<a href="mailto:craig.tierney@noaa.gov">craig.tierney@noaa.gov</a> <mailto:<a href="mailto:craig.tierney@noaa.gov">craig.tierney@noaa.gov</a>>> wrote:<br>
><br>
> Wei-keng,<br>
><br>
> Thanks for the test case. Here is what I get using a set of<br>
> compilers and MPI stacks. I was expecting that mvapich2 1.8 and 2.1<br>
> would behave differently.<br>
><br>
> What versions of MPI do you test internally?<br>
><br>
> Craig<br>
><br>
> Testing intel+impi<br>
><br>
> Currently Loaded Modules:<br>
> 1) newdefaults 2) intel/<a href="http://15.0.3.187" rel="noreferrer" target="_blank">15.0.3.187</a> <<a href="http://15.0.3.187" rel="noreferrer" target="_blank">http://15.0.3.187</a>> 3)<br>
> impi/<a href="http://5.1.1.109" rel="noreferrer" target="_blank">5.1.1.109</a> <<a href="http://5.1.1.109" rel="noreferrer" target="_blank">http://5.1.1.109</a>><br>
><br>
> Error at line 22: File does not exist, error stack:<br>
> ADIOI_NFS_OPEN(69): File /lfs3/jetmgmt/Craig.Tierney/<a href="http://tooth-fairy.nc" rel="noreferrer" target="_blank">tooth-fairy.nc</a><br>
> <<a href="http://tooth-fairy.nc" rel="noreferrer" target="_blank">http://tooth-fairy.nc</a>> does not exist<br>
> Testing intel+mvapich2 2.1<br>
><br>
> Currently Loaded Modules:<br>
> 1) newdefaults 2) intel/<a href="http://15.0.3.187" rel="noreferrer" target="_blank">15.0.3.187</a> <<a href="http://15.0.3.187" rel="noreferrer" target="_blank">http://15.0.3.187</a>> 3)<br>
> mvapich2/2.1<br>
><br>
> file was opened: /lfs3/jetmgmt/Craig.Tierney/<a href="http://tooth-fairy.nc" rel="noreferrer" target="_blank">tooth-fairy.nc</a><br>
> <<a href="http://tooth-fairy.nc" rel="noreferrer" target="_blank">http://tooth-fairy.nc</a>><br>
> Testing intel+mvapich2 1.8<br>
><br>
> Currently Loaded Modules:<br>
> 1) newdefaults 2) intel/<a href="http://15.0.3.187" rel="noreferrer" target="_blank">15.0.3.187</a> <<a href="http://15.0.3.187" rel="noreferrer" target="_blank">http://15.0.3.187</a>> 3)<br>
> mvapich2/1.8<br>
><br>
> file was opened: /lfs3/jetmgmt/Craig.Tierney/<a href="http://tooth-fairy.nc" rel="noreferrer" target="_blank">tooth-fairy.nc</a><br>
> <<a href="http://tooth-fairy.nc" rel="noreferrer" target="_blank">http://tooth-fairy.nc</a>><br>
> Testing pgi+mvapich2 2.1<br>
><br>
> Currently Loaded Modules:<br>
> 1) newdefaults 2) pgi/15.3 3) mvapich2/2.1<br>
><br>
> file was opened: /lfs3/jetmgmt/Craig.Tierney/<a href="http://tooth-fairy.nc" rel="noreferrer" target="_blank">tooth-fairy.nc</a><br>
> <<a href="http://tooth-fairy.nc" rel="noreferrer" target="_blank">http://tooth-fairy.nc</a>><br>
> Testing pgi+mvapich2 1.8<br>
><br>
> Currently Loaded Modules:<br>
> 1) newdefaults 2) pgi/15.3 3) mvapich2/1.8<br>
><br>
> file was opened: /lfs3/jetmgmt/Craig.Tierney/<a href="http://tooth-fairy.nc" rel="noreferrer" target="_blank">tooth-fairy.nc</a><br>
> <<a href="http://tooth-fairy.nc" rel="noreferrer" target="_blank">http://tooth-fairy.nc</a>><br>
><br>
> Craig<br>
><br>
> On Sun, Sep 20, 2015 at 1:43 PM, Wei-keng Liao<br>
> <<a href="mailto:wkliao@eecs.northwestern.edu">wkliao@eecs.northwestern.edu</a> <mailto:<a href="mailto:wkliao@eecs.northwestern.edu">wkliao@eecs.northwestern.edu</a>>><br>
> wrote:<br>
><br>
> In that case, it is likely mvapich does not perform correctly.<br>
><br>
> In PnetCDF, when NC_NOWRITE is used in a call to ncmpi_open,<br>
> PnetCDF calls a MPI_File_open with the open flag set to<br>
> MPI_MODE_RDONLY. See<br>
> <a href="http://trac.mcs.anl.gov/projects/parallel-netcdf/browser/tags/v1-6-1/src/lib/mpincio.c#L322" rel="noreferrer" target="_blank">http://trac.mcs.anl.gov/projects/parallel-netcdf/browser/tags/v1-6-1/src/lib/mpincio.c#L322</a><br>
><br>
> Maybe test this with a simple MPI-IO program below.<br>
> It prints error messages like<br>
> Error at line 15: File does not exist, error stack:<br>
> ADIOI_UFS_OPEN(69): File <a href="http://tooth-fairy.nc" rel="noreferrer" target="_blank">tooth-fairy.nc</a><br>
> <<a href="http://tooth-fairy.nc" rel="noreferrer" target="_blank">http://tooth-fairy.nc</a>> does not exist<br>
><br>
> But, no file should be created.<br>
><br>
><br>
> #include <stdio.h><br>
> #include <unistd.h> /* unlink() */<br>
> #include <mpi.h><br>
><br>
> int main(int argc, char **argv) {<br>
> int err;<br>
> MPI_File fh;<br>
><br>
> MPI_Init(&argc, &argv);<br>
><br>
> /* delete "<a href="http://tooth-fairy.nc" rel="noreferrer" target="_blank">tooth-fairy.nc</a> <<a href="http://tooth-fairy.nc" rel="noreferrer" target="_blank">http://tooth-fairy.nc</a>>" and<br>
> ignore the error */<br>
> unlink("<a href="http://tooth-fairy.nc" rel="noreferrer" target="_blank">tooth-fairy.nc</a> <<a href="http://tooth-fairy.nc" rel="noreferrer" target="_blank">http://tooth-fairy.nc</a>>");<br>
><br>
> err = MPI_File_open(MPI_COMM_WORLD, "<a href="http://tooth-fairy.nc" rel="noreferrer" target="_blank">tooth-fairy.nc</a><br>
> <<a href="http://tooth-fairy.nc" rel="noreferrer" target="_blank">http://tooth-fairy.nc</a>>", MPI_MODE_RDONLY, MPI_INFO_NULL, &fh);<br>
> if (err != MPI_SUCCESS) {<br>
> int errorStringLen;<br>
> char errorString[MPI_MAX_ERROR_STRING];<br>
> MPI_Error_string(err, errorString, &errorStringLen);<br>
> printf("Error at line %d: %s\n",__LINE__, errorString);<br>
> }<br>
> else<br>
> MPI_File_close(&fh);<br>
><br>
> MPI_Finalize();<br>
> return 0;<br>
> }<br>
><br>
><br>
> Wei-keng<br>
><br>
> On Sep 20, 2015, at 1:51 PM, Craig Tierney - NOAA Affiliate wrote:<br>
><br>
> > Wei-keng,<br>
> ><br>
> > I always run distclean before I try to build the code. The<br>
> first test failing is nc_test. The problem seems to be in this<br>
> test:<br>
> ><br>
> > err = ncmpi_open(comm, "<a href="http://tooth-fairy.nc" rel="noreferrer" target="_blank">tooth-fairy.nc</a><br>
> <<a href="http://tooth-fairy.nc" rel="noreferrer" target="_blank">http://tooth-fairy.nc</a>>", NC_NOWRITE, info, &ncid);/* should fail */<br>
> > IF (err == NC_NOERR)<br>
> > error("ncmpi_open of nonexistent file should have<br>
> failed");<br>
> > IF (err != NC_ENOENT)<br>
> > error("ncmpi_open of nonexistent file should have<br>
> returned NC_ENOENT");<br>
> > else {<br>
> > /* printf("Expected error message complaining: \"File<br>
> <a href="http://tooth-fairy.nc" rel="noreferrer" target="_blank">tooth-fairy.nc</a> <<a href="http://tooth-fairy.nc" rel="noreferrer" target="_blank">http://tooth-fairy.nc</a>> does not exist\"\n"); */<br>
> > nok++;<br>
> > }<br>
> ><br>
> > A zero length <a href="http://tooth-fairy.nc" rel="noreferrer" target="_blank">tooth-fairy.nc</a> <<a href="http://tooth-fairy.nc" rel="noreferrer" target="_blank">http://tooth-fairy.nc</a>> file is<br>
> being created, and I don't think that is supposed to happen.<br>
> That would mean that the mode NC_NOWRITE is not being honored by<br>
> MPI_IO. I will look at this more tomorrow and try to craft a<br>
> short example.<br>
> ><br>
> > Craig<br>
> ><br>
> > On Sun, Sep 20, 2015 at 10:23 AM, Wei-keng Liao<br>
> <<a href="mailto:wkliao@eecs.northwestern.edu">wkliao@eecs.northwestern.edu</a><br>
> <mailto:<a href="mailto:wkliao@eecs.northwestern.edu">wkliao@eecs.northwestern.edu</a>>> wrote:<br>
> > Hi, Craig<br>
> ><br>
> > Your config.log looks fine to me.<br>
> > Some of your error messages are supposed to report errors of<br>
> opening<br>
> > a non-existing file, but report a different error code,<br>
> meaning the<br>
> > file does exist. I suspect it may be because of residue files.<br>
> ><br>
> > Could you do a clean rebuild with the following commands?<br>
> > % make -s distclean<br>
> > % ./configure --prefix=/apps/pnetcdf/1.6.1-intel-mvapich2<br>
> > % make -s -j8<br>
> > % make -s check<br>
> ><br>
> > If the problem persists, then it might be because mvapich.<br>
> ><br>
> > Wei-keng<br>
> ><br>
><br>
><br>
><br>
><br>
> --<br>
> Rob Latham<br>
> Mathematics and Computer Science Division<br>
> Argonne National Lab, IL USA<br>
><br>
<br>
</div></div></blockquote></div><br></div>