\subsubsection faq_trouble_err_logcat "gcc: _simgrid_this_log_category_does_not_exist__??? undeclared (first use in this function)"
-This is because you are using the log mecanism, but you didn't created
+This is because you are using the log mechanism, but you didn't created
any default category in this file. You should refer to \ref XBT_log
for all the details, but you simply forgot to call one of
XBT_LOG_NEW_DEFAULT_CATEGORY() or XBT_LOG_NEW_DEFAULT_SUBCATEGORY().
\subsection faq_trouble_errors Runtime error messages
-\subsubsection faq_flexml_limit "surf_parse_lex: Assertion `next limit' failed."
-
-This is because your platform file is too big for the parser.
-
-Actually, the message comes directly from FleXML, the technology on top of
-which the parser is built. FleXML has the bad idea of fetching the whole
-document in memory before parsing it. And moreover, the memory buffer size
-must be determined at compilation time.
-
-We use a value which seems big enough for our need without bloating the
-simulators footprints. But of course your mileage may vary. In this case,
-just edit src/surf/surfxml.l modify the definition of
-FLEXML_BUFFERSTACKSIZE. E.g.
-
-\verbatim
-#define FLEXML_BUFFERSTACKSIZE 1000000000
-\endverbatim
-
-Then recompile and everything should be fine, provided that your version of
-Flex is recent enough (>= 2.5.31). If not the compilation process should
-warn you.
-
-A while ago, we worked on FleXML to reduce a bit its memory consumption, but
-these issues remain. There is two things we should do:
-
- - use a dynamic buffer instead of a static one so that the only limit
- becomes your memory, not a stupid constant fixed at compilation time
- (maybe not so difficult).
- - change the parser so that it does not need to get the whole file in
- memory before parsing
- (seems quite difficult, but I'm a complete newbe wrt flex stuff).
-
-These are changes to FleXML itself, not SimGrid. But since we kinda hijacked
-the development of FleXML, I can grant you that any patches would be really
-welcome and quickly integrated.
-
-<b>Update:</b> A new version of FleXML (1.7) was released. Most of the work
-was done by William Dowling, who use it in his own work. The good point is
-that it now use a dynamic buffer, and that the memory usage was greatly
-improved. The downside is that William also changed some things internally,
-and it breaks the hack we devised to bypass the parser, as explained in
-\ref pf_flexml_bypassing. Indeed, this is not a classical usage of the
-parser, and Will didn't imagine that we may have used (and even documented)
-such a crude usage of FleXML. So, we now have to repair the bypassing
-functionality to use the latest FleXML version and fix the memory usage in
-SimGrid.
-
\subsubsection faq_trouble_errors_big_fat_warning I'm told that my XML files are too old.
The format of the XML platform description files is sometimes
That is why the XML files are versionned using the 'version' attribute
of the root tag. Currently, it should read:
-\verbatim
- <platform version="2">
-\endverbatim
+@verbatim
+ <platform version="4">
+@endverbatim
If your files are too old, you can use the simgrid_update_xml.pl
script which can be found in the tools directory of the archive.
==21434== at 0x420DC3A: __longjmp (__longjmp.S:48)
\endverbatim
-This is the sign that you didn't used the exception mecanism well. Most
+This is the sign that you didn't used the exception mechanism well. Most
probably, you have a <tt>return;</tt> somewhere within a <tt>TRY{}</tt>
block. This is <b>evil</b>, and you must not do this. Did you read the section
about \ref XBT_ex??
Unfortunately, we cannot debug every code written in SimGrid. We
furthermore believe that the framework provides ways enough
-information to debug such informations yourself. If the textual output
+information to debug such information yourself. If the textual output
is not enough, Make sure to check the \ref faq_visualization FAQ entry to see
how to get a graphical one.
