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chapter_3.6.html @ 1985

Last change on this file since 1985 was 83, checked in by raasch, 18 years ago

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PALM can be generally installed on any kind of Linux-, IBM-AIX-, or NEC-SX-system by adding appropriate settings to the configuration file.

Scripts are also running under the public domain ksh.

All system relevant compile and link options as well as the host identifier (local_host) are specified in the configuration file.

Filetransfer by ftp removed (options -f removed from mrun and mbuild).

Call of (system-)FLUSH routine moved to new routine local_flush.

return_addres and return_username are read from ENVPAR-NAMELIST-file instead of using local_getenv.

Preprocessor strings for different linux clusters changed to "lc", some preprocessor directives renamed (new: intel_openmp_bug), preprocessor directives for old systems removed

advec_particles, check_open, cpu_log, cpu_statistics, data_output_dvrp, flow_statistics, header, init_dvrp, init_particles, init_1d_model, init_dvrp, init_pegrid, local_getenv, local_system, local_tremain, local_tremain_ini, modules, palm, parin, run_control

new:
local_flush

mbuild, mrun

Errors:

Property svn:keywords set to Id

File size: 7.9 KB

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1	<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
2	<html><head>
3	<meta http-equiv="CONTENT-TYPE" content="text/html; charset=windows-1252"><title>PALM chapter 3.6</title> <meta name="GENERATOR" content="StarOffice 7 (Win32)"> <meta name="AUTHOR" content="Siegfried Raasch"> <meta name="CREATED" content="20040809;10583400"> <meta name="CHANGED" content="20041112;15013624"> <meta name="KEYWORDS" content="parallel LES model"> <style>
4	<!--
5	@page { size: 21cm 29.7cm }
6	-->
7	</style></head>
8	<body style="direction: ltr;" lang="en-US"><h3 style="line-height: 100%;">3.6 Interactive mode and debugging</h3>
9	<p style="line-height: 100%;">You can use <b>mrun</b>
10	for running PALM
11	in batch mode as well as for running it interactively. For interactive
12	runs, you must (naturally) be logged in on the respective computer. For
13	this computer the subroutines of the model must have
14	been precompiled (see <a href="chapter_5.0.html">chapter
15	5.0</a>). Files containing user-defined code must be stored in
16	the directory given by the variable<span style="font-family: Courier New,Courier,monospace;">
17	%add_source_path </span>in the mrun-configuration file<span style="font-family: Courier New,Courier,monospace;">
18	.mrun.config</span>.<span style="font-family: monospace;"></span>
19	All output-files possibly
20	created by the model and requested by the user to be kept after the run
21	are copied to
22	directories on the local host corresponding to the specifications
23	in the configuration file (in this case the file attribute<span style="font-family: Courier New,Courier,monospace;"> tr </span>does not cause transfer to another computer). </p>
24	<p style="line-height: 100%;">Since model runs usually
25	require large
26	amounts of CPU time, interactive runs may not be feasible, since
27	in interactive mode CPU time
28	is strongly limited on many hosts and runs will be aborted
29	after the time limit has been exceeded. However, an interactive run
30	makes sense if a suitable debugger is available,
31	which may be used for error tracing in the model (here, error tracing
32	in
33	the user-defined software is meant). The preparations neccessary for
34	debugging are described in the following. This
35	description is limited to the IBM Regatta "hanni" and "berni" of the
36	HLRN. </p>
37	<p style="line-height: 100%;">If certain routines of the
38	model
39	are to be debugged for errors, the complete source code of
40	the model, including the user-defined code, must be compiled
41	with special debug compiler options. For this purpose, at least the
42	following three lines must be included in the <span style="font-weight: bold;">mrun </span>configuration
43	file:<br>
44	</p><p style="line-height: 100%;"><span style="font-family: Courier New,Courier,monospace;">%compiler_name
45	mpxlf95_r
46	ibmh parallel debug</span><br style="font-family: Courier New,Courier,monospace;">
47	<span style="font-family: Courier New,Courier,monospace;">%fopts
48	-g:-C:-qinitauto=FF:-qrealsize=8:-Q:-q64:-qmaxmem=-1:-qtune=pwr4:</span><br style="font-family: Courier New,Courier,monospace;"><span style="font-family: Courier New,Courier,monospace;">
49
50	-qarch=pwr4:-qnosave:-qnoescape:-qflttrap=overflow::zerodivide:</span><br style="font-family: Courier New,Courier,monospace;"><span style="font-family: Courier New,Courier,monospace;">
51
52	:invalid::enable:-qsigtrap
53	ibmh parallel debug</span><br style="font-family: Courier New,Courier,monospace;">
54	<span style="font-family: Courier New,Courier,monospace;">%lopts
55	-g:-C:-qinitauto=FF:-qrealsize=8:-Q:-q64:-qmaxmem=-1:-qtune=pwr4:</span><br style="font-family: Courier New,Courier,monospace;"><span style="font-family: Courier New,Courier,monospace;">
56
57	-qarch=pwr4:-qnosave:-qnoescape:-qflttrap=overflow::zerodivide:</span><br style="font-family: Courier New,Courier,monospace;"><span style="font-family: Courier New,Courier,monospace;">
58
59	:invalid::enable:-qsigtrap:-lesslsmp
60	ibmh parallel debug</span><br style="font-family: monospace;">
61	<br></p>
62	<p style="line-height: 100%;">(Attention: in the
63	configuration file,
64	the compiler and linker options (<span style="font-family: Courier New,Courier,monospace;">fopts
65	</span>and<span style="font-family: Courier New,Courier,monospace;"> lopts</span>)
66	must be
67	written in one line without any blank space before and after the
68	colons!)<br>
69	</p><p style="line-height: 100%;">Using the compiler
70	options "<span style="font-family: Courier New,Courier,monospace;">-g</span>"
71	and "<span style="font-family: Courier New,Courier,monospace;">-C</span>",
72	debugable code is created
73	and check of array bounds is
74	switched on during run time. Option "<span style="font-family: Courier New,Courier,monospace;">-qinitauto=FF</span>"
75	initializes all
76	automatic variables (unfortunately not the global values of modules) to
77	NaN.The "<span style="font-family: Courier New,Courier,monospace;">-qflttrap</span>"
78	and "<span style="font-family: Courier New,Courier,monospace;">-qsigtrap</span>"
79	options are needed
80	in order to terminate the run in case of any floating point errors
81	(otherwise the run will not terminate and errors can hardly be
82	detected).<br>
83	</p><p style="line-height: 100%;">The <b>mrun
84	</b>call for debugging
85	needs
86	an extended argument for the option<span style="font-family: Courier New,Courier,monospace;"> </span><font style="font-size: 10pt; font-family: Courier New,Courier,monospace;" size="2">-K</font>:</p><div style="margin-left: 40px; font-family: Courier New,Courier,monospace;">mrun
87	... -K “parallel debug” -s ”*.f90" ... .</div><p style="line-height: 100%;">The argument of option<span style="font-family: Courier New,Courier,monospace;"> -s </span><span style="font-family: Courier New,Courier,monospace;"></span>must
88	list all source code files of the default PALM code. </p>
89	<p style="line-height: 100%;">After compiling, the
90	debugger
91	<b>TotalView</b> is automatically called by <span style="font-weight: bold;">mrun</span>. With its
92	assistance the user
93	has to start
94	the program execution manually, to set breakpoints, etc.. User manuals
95	of <b>TotalView</b> are available <a href="http://www.hlrn.de/doc/totalview/index.html">online</a>.
96	</p><p style="line-height: 100%;">Program crashes
97	caused by errors in the
98	user-defined code should usually be found
99	unassisted. If the termination point lies outside the user code (in the
100	default model code), the PALM group can be asked for
101	assistance, but please do not expect any quick response. It is
102	emphasized again that error tracing and programming
103	of
104	user-defined code requires more or less precise knowledge of the
105	internal structure of PALM (see beginning of <a href="chapter_3.5.html">chapter
106	3.5</a>). <br>
107	</p>
108	<hr><p style="line-height: 100%;"><br>
109	<font color="#000080"><font color="#000080"><a href="chapter_3.5.5.html"><font color="#000080"><img src="left.gif" name="Grafik1" align="bottom" border="2" height="32" width="32"></font></a><a href="index.html"><font color="#000080"><img src="up.gif" name="Grafik2" align="bottom" border="2" height="32" width="32"></font></a><a href="chapter_3.7.html"><font color="#000080"><img src="right.gif" name="Grafik3" align="bottom" border="2" height="32" width="32"></font></a></font></font></p><p style="line-height: 100%;"><i>Last change: </i>
110	$Id: chapter_3.6.html 83 2007-04-19 16:27:07Z suehring $</p>
111	</body></html>

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source: palm/trunk/DOC/app/chapter_3.6.html @ 1985

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