huibintemaspamfaq
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huibintemaspamfaq [2019/01/10 10:36] – [SPAM frequently asked questions] huibintema | huibintemaspamfaq [2021/02/03 14:26] (current) – huibintema | ||
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import OSystem, OErr | import OSystem, OErr | ||
</ | </ | ||
- | Something will fail here, probably a missing python package or a missing library. Some of the missing libraries can be found [[ftp:// | + | Something will fail here, probably a missing python package or a missing library. Some of the missing libraries can be found [[https:// |
<code bash> | <code bash> | ||
ldd ${SPAM_PATH}/ | ldd ${SPAM_PATH}/ | ||
</ | </ | ||
This will report all libraries that are needed by Obit. If one is missing, the line will contain the text "=> not found" | This will report all libraries that are needed by Obit. If one is missing, the line will contain the text "=> not found" | ||
+ | |||
+ | ----- | ||
+ | |||
+ | ==== libncurses.so.6 is missing ==== | ||
+ | |||
+ | Q: Why is libncurses.so.6 reported to be missing during the AIPS install? | ||
+ | |||
+ | A: The AIPS install may fail because the libncurses.so.6 library cannot be found. This library is available in the lib subdirectory of the spam install directory. The library can be copied to one of the standard locations (e.g., /usr/lib) or the LD_LIBRARY_PATH environment variable can be modified to include the spam/lib directory before running AIPS install again. The latter can be done in bash: | ||
+ | <code bash> | ||
+ | export LD_LIBRARY_PATH=${LD_LIBRARY_PATH}: | ||
+ | </ | ||
+ | Or in (t)csh: | ||
+ | <code bash> | ||
+ | setenv LD_LIBRARY_PATH ${LD_LIBRARY_PATH}: | ||
+ | </ | ||
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- | |||
==== Problems running SPAM on new Intel CPUs, possibly after Linux update ==== | ==== Problems running SPAM on new Intel CPUs, possibly after Linux update ==== | ||
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Q: Why doesn' | Q: Why doesn' | ||
- | A: Updates of the Linux operating system in 2017 has triggered floating point problems when running AIPS tasks on a new line of Intel Xeon E5-xxx CPUs. This is likely caused by an outdated Intel compiler used to build the AIPS binary install. A GNU compiled version of AIPS 31DEC13 fixes the problem and is available [[ftp:// | + | A: Updates of the Linux operating system in 2017 has triggered floating point problems when running AIPS tasks on a new line of Intel Xeon E5-xxx CPUs. This is likely caused by an outdated Intel compiler used to build the AIPS binary install. A GNU compiled version of AIPS 31DEC13 fixes the problem and is available [[https:// |
+ | |||
+ | Q: Why does the SPAM pipeline generate signal 11 errors in certain AIPS tasks? | ||
+ | |||
+ | A: What is causing this is not completely clear, but probably has to do with the newer Intel hardware and Linux installs. A work-around seems to be to use the GNU-compiled version of AIPS 31DEC13 available [[https:// | ||
+ | |||
+ | (Kindly tested by Gerrit Schellenberger and Arnab Chakraborty) | ||
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==== SPAM crashes in screen session ==== | ==== SPAM crashes in screen session ==== | ||
- | Q: Why does my SPAM pipeline run crash when the screen session in which I run SPAM is interrupted? | + | Q: Why does my SPAM pipeline run crash when the screen session in which I run SPAM is interrupted, or when I reconnect? |
A: As the SPAM pipeline can take several hours to days to run, it is useful to execute it in a screen session when working remotely. However, some users found that the SPAM pipeline crashed during a disconnect from the screen session with the error "Fatal IO error 11 (Resource temporarily unavailable) on X server localhost: | A: As the SPAM pipeline can take several hours to days to run, it is useful to execute it in a screen session when working remotely. However, some users found that the SPAM pipeline crashed during a disconnect from the screen session with the error "Fatal IO error 11 (Resource temporarily unavailable) on X server localhost: | ||
- | (Kindly contributed by Andrea Botteon) | + | Another problem with using screen was found when reconnecting, |
+ | |||
+ | |||
+ | (Kind contributions from Andrea Botteon | ||
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----- | ----- | ||
- | Feedback: [[huib.intema@curtin.edu.au|Click here]] | + | ==== Problems running SPAM on new Intel CPUs, possibly after Linux update ==== |
+ | |||
+ | Q: Why doesn' | ||
+ | |||
+ | A: Updates of the Linux operating system in 2017 has triggered floating point problems when running AIPS tasks on a new line of Intel Xeon E5-xxx CPUs. This is likely caused by an outdated Intel compiler used to build the AIPS binary install. A GNU compiled version of AIPS 31DEC13 fixes the problem and is available | ||
+ | |||
+ | ----- | ||
+ | |||
+ | Feedback: [[intema@strw.leidenuniv.nl|Click here]] | ||
huibintemaspamfaq.1547113005.txt.gz · Last modified: 2019/01/10 10:36 by huibintema