We’re running ANSYS 19.2, and its Electronics Desktop, on a bunch of CentOS 7.5 nodes. All are headless and most lack discrete GPUs. A handful have some model of Tesla GPU installed.<\/p>\n
We’re having a problem with libGL and libswrast. When running “ansysedt” for the Electronics Desktop, for example, if I click “Project”, then “Insert HFSS Design”, I get<\/p>\n
libGL error: failed to load driver: swrast.so <\/p>\n
Without mesa-drivers-dri installed, then I also get this error<\/p>\n
libGL error: unable to load driver: swrast_dri.so<\/p>\n
From strace I can see that nodes without mesa-dri-drivers installed lack libswrast altogether, and those with it installed can’t use the libswrast that the RPM provides.<\/p>\n
Some other instances of Ansys use on our cluster might see these same symptoms–I don’t know.<\/p>\n
If I set Ansys to use only software rendering, then those libGL errors go away, but the program still freezes, just as reported in the thread<\/p>\n
\/forum\/forums\/topic\/libgl-error\/?order=all#comment-a9ac6bb7-6081-46ff-b60f-a9ac01561f7b<\/p>\n
All nodes show one of “ast” or “mgag200” (depending on motherboard) as the output of “lspci -nnk | grep -i vga -A3 | grep ‘in use'”.<\/p>\n
I think all required RPMs, including i686, are installed on these nodes.<\/p>\n
For GUIs, our users SSH (from whatever platform) into our cluster, with X11 forwarded.<\/p>\n
“cat \/etc\/*release” on all nodes looks as below. I know Ansys 19.2 doesn’t officially support CentOS 7.5, but suspect that the GL swrast problem is independent of that.<\/p>\n
\/etc\/centos-release:
CentOS Linux release 7.5.1804 (Core) <\/p>\n
\/etc\/os-release:
NAME=”CentOS Linux”
VERSION=”7 (Core)”
ID=”centos”
ID_LIKE=”rhel fedora”
VERSION_ID=”7″
PRETTY_NAME=”CentOS Linux 7 (Core)”
ANSI_COLOR=”0;31″
CPE_NAME=”cpe![\"\"](\"\/content\/images\/emoticons\/unsure-emoticon.png\")
o:centos:centos:7″
HOME_URL=”https:\/\/www.centos.org\/”
BUG_REPORT_URL=”https:\/\/bugs.centos.org\/”
CENTOS_MANTISBT_PROJECT=”CentOS-7″
CENTOS_MANTISBT_PROJECT_VERSION=”7″
REDHAT_SUPPORT_PRODUCT=”centos”
REDHAT_SUPPORT_PRODUCT_VERSION=”7″<\/p>\n
\/etc\/redhat-release:
CentOS Linux release 7.5.1804 (Core) <\/p>\n
\/etc\/system-release:
CentOS Linux release 7.5.1804 (Core) <\/p>\n","protected":false},"template":"","class_list":["post-32700","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_old_topic_id":["4872"],"_bbp_old_topic_author_name_id":["Anonymous"],"_bbp_old_is_topic_anonymous_id":["false"],"_bbp_old_closed_status_id":["publish"],"_bbp_author_ip":[null],"_bbp_old_sticky_status_id":["normal"],"_bbp_likes_count":["0","0","0","0","0"],"_btv_view_count":["2559"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["32700"],"_bbp_forum_id":["27796"],"_bbp_engagement":["41633","157480"],"_bbp_voice_count":["2"],"_bbp_reply_count":["5"],"_bbp_last_reply_id":["75228"],"_bbp_last_active_id":["75228"],"_bbp_last_active_time":["2019-01-18 00:08:18"]},"test":"pbrunk"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/32700","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics"}],"about":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/types\/topic"}],"version-history":[{"count":0,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/32700\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=32700"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}