Failed to create projection

[QuentinBrissaud]

Dear SCEC community,

I recently encountered a problem while setting up UCVM on my local computer (Ubuntu 20.04) using the default installation path.
As described in the wiki, I followed the following steps:

• git clone https://github.com/SCECcode/UCVMC.git
• cd UCVMC/largefiles
• ./get_large_files.py
• ./check_largefiles_md5.py
• ./stage_large_files.py
• cd ..
• ./ucvm_setup.py

However, once "ucvm_setup.py" successfully finished the installation of UCVM, the "make check" command showed an error while creating the UCVM projection:

Failed to create output UCVM projection +proj=aeqd +lat_0=36.0 +lon_0=-120.0 +x_0=0.0 +y_0=0.0
Proj.4 Error: major axis or radius = 0 or not given
Failed to setup proj +proj=aeqd +lat_0=36.0 +lon_0=-120.0 +x_0=0.0 +y_0=0.0.
Failed to initialize UCVM map

I went through the codes of both UCVM and the proj library to see where it originated (from top to bottom):

1. p->opj = pj_init_plus(pstr); returns NULL (l. 17) in routine ucvm_proj_ucvm_init in "src/ucvm_proj_ucvm.c"
2. err = pj_ellipsoid (PIN); is set to 2 (l. 594) in pj_init_ctx which eventually returns NULL (l. 600) in "proj-5/src/pj_init.c"
3. the condition if (0 != ellps_size (P)) is True (l. 94) in pj_ellipsoid in "proj-5/src/pj_ell_set.c"

I did not go further and I still do not know if the problem I observed was only indirectly related to that condition on "ellps_size" but there seems to be an incompatibility of UCVMC, proj and my local configuration.

My configuration is the following:

• Ubuntu 20.04 - kernel 5.4.0-050400rc1-lowlatency
• libopenmpi libraries version 4.0.3-0ubuntu1
• gcc/gfortran binaries version 9.3.0-1ubuntu2

Note that I also tried to install UCVM with downgraded versions for libopenmpi (3.1.3-11build1) and gcc/gfortran (8.4.0-3ubuntu2) but that did not solve the problem.

There is a similar problem mentioned in the wiki: http://scec.usc.edu/scecwiki/index.php?title=UCVM_User_Guide&redirect=no#Proj._4_Error:_major_axis_or_radius_.3D_0_or_not_given
But in my case, the following is true: "--prefix directory is actually visible to the compute nodes". Therefore, I am not sure how it applies to my problem.

Do you have any idea where the problem could originate from?

Thank you a lot for your help.

[meihuisu]

Hi, Could you check if this might be the issue in your case ? #116 Mei

…

________________________________ From: Quentin Brissaud <[email protected]> Sent: Monday, May 11, 2020 4:51 PM To: SCECcode/UCVMC <[email protected]> Cc: Subscribed <[email protected]> Subject: [SCECcode/UCVMC] Failed to create projection (#117) Dear SCEC community, I recently encountered a problem while setting up UCVM on my local computer (Ubuntu 20.04) using the default installation path. As described in the wiki, I followed the following steps: * git clone https://github.com/SCECcode/UCVMC.git<https://urldefense.com/v3/__https://github.com/SCECcode/UCVMC.git__;!!LIr3w8kk_Xxm!5NyuoL-1aPgCX6CaorfRgoRTpKdejnb2MJx2e57AjbRVt_nXyGtWL8KLwtQ$> * cd UCVMC/largefiles * ./get_large_files.py * ./check_largefiles_md5.py * ./stage_large_files.py * cd .. * ./ucvm_setup.py However, once "ucvm_setup.py" successfully finished the installation of UCVM, the "make check" command showed an error while creating the UCVM projection: Failed to create output UCVM projection +proj=aeqd +lat_0=36.0 +lon_0=-120.0 +x_0=0.0 +y_0=0.0 Proj.4 Error: major axis or radius = 0 or not given Failed to setup proj +proj=aeqd +lat_0=36.0 +lon_0=-120.0 +x_0=0.0 +y_0=0.0. Failed to initialize UCVM map I went through the codes of both UCVM and the proj library to see where it originated (from top to bottom): 1. p->opj = pj_init_plus(pstr); returns NULL (l. 17) in routine ucvm_proj_ucvm_init in "src/ucvm_proj_ucvm.c" 2. err = pj_ellipsoid (PIN); is set to 2 (l. 594) in pj_init_ctx which eventually returns NULL (l. 600) in "proj-5/src/pj_init.c" 3. the condition if (0 != ellps_size (P)) is True (l. 94) in pj_ellipsoid in "proj-5/src/pj_ell_set.c" I did not go further and I still do not know if the problem I observed was only indirectly related to that condition on "ellps_size" but there seems to be an incompatibility of UCVMC, proj and my local configuration. My configuration is the following: * Ubuntu 20.04 - kernel 5.4.0-050400rc1-lowlatency * libopenmpi libraries version 4.0.3-0ubuntu1 * gcc/gfortran binaries version 9.3.0-1ubuntu2 Note that I also tried to install UCVM with downgraded versions for libopenmpi (3.1.3-11build1) and gcc/gfortran (8.4.0-3ubuntu2) but that did not solve the problem. There is a similar problem mentioned in the wiki: http://scec.usc.edu/scecwiki/index.php?title=UCVM_User_Guide&redirect=no#Proj._4_Error:_major_axis_or_radius_.3D_0_or_not_given But in my case, the following is true: "--prefix directory is actually visible to the compute nodes". Therefore, I am not sure how it applies to my problem. Do you have any idea where the problem could originate from? Thank you a lot for your help. — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub<https://urldefense.com/v3/__https://github.com/SCECcode/UCVMC/issues/117__;!!LIr3w8kk_Xxm!5NyuoL-1aPgCX6CaorfRgoRTpKdejnb2MJx2e57AjbRVt_nXyGtWteBUNnw$>, or unsubscribe<https://urldefense.com/v3/__https://github.com/notifications/unsubscribe-auth/ACE7UF5TE4BGHWO3CCNWTNDRRCFQZANCNFSM4M6LBWVA__;!!LIr3w8kk_Xxm!5NyuoL-1aPgCX6CaorfRgoRTpKdejnb2MJx2e57AjbRVt_nXyGtWsFeJvvs$>.

[QuentinBrissaud]

Hi Mei,

Thank you for your help.
I actually had the same issue than in #116 , I had to unset the variable PROJ_LIB to make it work.

Additionally, with new mpi libraries such as the version 4.0.3 on Linux, the structure "MPI_Type_struct" does not exist anymore and make the compilation crash in "ue_mpi.c" and "um_mpi.c". Simply switch to "MPI_Type_create_struct" to resolve the issue.

Thank you again.

Quentin

[meihuisu]

Glad that it worked out for you. Thank you for the MPI info. We will look into it. Mei

…

________________________________ From: Quentin Brissaud <[email protected]> Sent: Tuesday, May 12, 2020 8:14 AM To: SCECcode/UCVMC <[email protected]> Cc: Mei-Hui Su <[email protected]>; Comment <[email protected]> Subject: Re: [SCECcode/UCVMC] Failed to create projection (#117) Hi Mei, Thank you for your help. I actually had the same issue than in #116<https://urldefense.com/v3/__https://github.com/SCECcode/UCVMC/issues/116__;!!LIr3w8kk_Xxm!7Hiogo9LrOCe2lbdpCxwn0agt4pP7w-xrAIKlfGkPOIQTNFy-oAnGYpyo2k$> , I had to unset the variable PROJ_LIB to make it work. Additionally, with new mpi libraries such as the version 4.0.3 on Linux, the structure "MPI_Type_struct" does not exist anymore and make the compilation crash in "ue_mpi.c" and "um_mpi.c". Simply switch to "MPI_Type_create_struct" to resolve the issue. Thank you again. Quentin — You are receiving this because you commented. Reply to this email directly, view it on GitHub<https://urldefense.com/v3/__https://github.com/SCECcode/UCVMC/issues/117*issuecomment-627409042__;Iw!!LIr3w8kk_Xxm!7Hiogo9LrOCe2lbdpCxwn0agt4pP7w-xrAIKlfGkPOIQTNFy-oAnsKWRM4k$>, or unsubscribe<https://urldefense.com/v3/__https://github.com/notifications/unsubscribe-auth/ACE7UFZANOQUA26HXIEVLR3RRFRXBANCNFSM4M6LBWVA__;!!LIr3w8kk_Xxm!7Hiogo9LrOCe2lbdpCxwn0agt4pP7w-xrAIKlfGkPOIQTNFy-oAn0xMb_fU$>.