huibintema:spam:faq
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huibintema:spam:faq [2020/11/19 15:27] – created huibintema | huibintema:spam:faq [2021/03/15 12:52] (current) – [Problems running SPAM on new Intel CPUs, possibly after Linux update] 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}/ | ||
Line 149: | Line 149: | ||
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 This is likely caused by an outdated Intel compiler used to build the AIPS binary install.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 This is likely caused by an outdated Intel compiler used to build the AIPS binary install.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? | 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 [[ftp:// | + | 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) | (Kindly tested by Gerrit Schellenberger and Arnab Chakraborty) | ||
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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 This is likely caused by an outdated Intel compiler used to build the AIPS binary install.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:// |
+ | |||
+ | ----- | ||
+ | |||
+ | ==== SPAM fails in running any AIPS tasks ==== | ||
+ | |||
+ | Q: Why do all AIPS task calls from SPAM fail without generating any AIPS text output? | ||
+ | |||
+ | A: Your output may look something like this: | ||
+ | <code python> | ||
+ | *** calling AIPSTask FITLD | ||
+ | *** calling AIPSTask FITLD (RETRY 1) | ||
+ | *** calling AIPSTask FITLD (RETRY 2) | ||
+ | *** calling AIPSTask FITLD (RETRY 3, FINAL) | ||
+ | Traceback (most recent call last): | ||
+ | ... | ||
+ | raise RuntimeError, | ||
+ | RuntimeError: | ||
+ | ... | ||
+ | </ | ||
+ | |||
+ | This is likely because the path to the AIPS binary tasks is not set properly within SPAM. When you type the following in SPAM: | ||
+ | <code python> | ||
+ | os.getenv( ' | ||
+ | </ | ||
+ | the second entry in the PATH (between colons ':' | ||
+ | ''< | ||
+ | If it reads | ||
+ | ''< | ||
+ | then it probably means that your computername is not listed in the HOSTS.LIST in < | ||
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huibintema/spam/faq.1605796050.txt.gz · Last modified: 2020/11/19 15:27 by huibintema