GHC Runs Out of Memory

[Simon Peyton-Jones]

I guess you need to tell your OS to allow bigger processes.
GHC takes memory at least proportional to input size, so
a 23,000 line input file is likely to take a lot of bytes.  Trimming
GHC's space usage is always on our to-do list!

Simon

| -----Original Message-----
| From: D.J.Steinitz [mailto:D.J.Steinitz at ukc.ac.uk] 
| Sent: 24 June 2002 10:32
| To: glasgow-haskell-bugs at haskell.org
| Subject: GHC Runs Out of Memory
| 
| 
| 
| I generated SVG10.hs using DtdToHaskell (part of the HaXml 
| toolset) from the SVG (scalable vector graphics) DTD. I had 
| to modify Xml2Haskell.hs as it wouldn't compile with the one 
| that comes with the HaXml distribution (DtdToHaskell 
| generates Haskell types based on the definitions in the DTD 
| and some of these were not available in Xml2Haskell.hs).
| 
| I then applied ghc but it ran out of memory. Here's the tail of dmesg:
| 
| Out of Memory: Killed process 1699 (ghc-5.02.2).
| Out of Memory: Killed process 2077 (ghc-5.02.2).
| Out of Memory: Killed process 2340 (ghc-5.02.2).
| 
| I can send SVG10.hs and the modified Xml2Haskell.hs or I can 
| send the HaXml tarball with SVG10.hs and the modified 
| Xml2Haskell.hs inside it.
| 
| Dominic.
| 
| And here is the output from ghc before it died.
| 
| djs25 at compsci-lt2:~/testxml$ ghc -c -H128m SVG10.hs -v2 
| -fno-strictness -i../HaXml-1.05/lib -I../HaXml-1.05/lib/ 
| Glasgow Haskell Compiler, Version 5.02.2, for Haskell 98, 
| compiled by GHC version 5.02.2 Using package config file: 
| /usr/lib/ghc-5.02.2/package.conf
| *** Checking old interface for hs = Just "SVG10.hs", hspp = 
| Just "SVG10.hs":
| *** Parser:
| *** Renamer:
| *** Typechecker:
| *** Desugar:
| 
| SVG10.hs:8848: Warning: Pattern match(es) are overlapped
|     In the definition of `fromElem': fromElem rest = ...
| 
| SVG10.hs:9631: Warning: Pattern match(es) are overlapped
|     In the definition of `fromElem': fromElem rest = ...
| 
| SVG10.hs:10405: Warning: Pattern match(es) are overlapped
|     In the definition of `fromElem': fromElem rest = ...
| 
| SVG10.hs:11249: Warning: Pattern match(es) are overlapped
|     In the definition of `fromElem': fromElem rest = ...
| 
| SVG10.hs:15982: Warning: Pattern match(es) are overlapped
|     In the definition of `fromElem': fromElem rest = ...
| 
| SVG10.hs:16621: Warning: Pattern match(es) are overlapped
|     In the definition of `fromElem': fromElem rest = ...
| 
| SVG10.hs:17245: Warning: Pattern match(es) are overlapped
|     In the definition of `fromElem': fromElem rest = ...
| 
| SVG10.hs:17866: Warning: Pattern match(es) are overlapped
|     In the definition of `fromElem': fromElem rest = ...
| 
| SVG10.hs:19310: Warning: Pattern match(es) are overlapped
|     In the definition of `fromElem': fromElem rest = ...
| 
| SVG10.hs:20317: Warning: Pattern match(es) are overlapped
|     In the definition of `fromElem': fromElem rest = ...
| 
| SVG10.hs:20545: Warning: Pattern match(es) are overlapped
|     In the definition of `fromElem': fromElem rest = ...
| 
| SVG10.hs:21902: Warning: Pattern match(es) are overlapped
|     In the definition of `fromElem': fromElem rest = ...
| 
| SVG10.hs:23200: Warning: Pattern match(es) are overlapped
|     In the definition of `fromElem': fromElem rest = ...
| 
| SVG10.hs:23236: Warning: Pattern match(es) are overlapped
|     In the definition of `fromElem': fromElem rest = ...
| 
| SVG10.hs:23282: Warning: Pattern match(es) are overlapped
|     In the definition of `fromElem': fromElem rest = ...
| 
| SVG10.hs:23330: Warning: Pattern match(es) are overlapped
|     In the definition of `fromElem': fromElem rest = ...
| 
| SVG10.hs:23406: Warning: Pattern match(es) are overlapped
|     In the definition of `fromElem': fromElem rest = ...
| 
| SVG10.hs:23531: Warning: Pattern match(es) are overlapped
|     In the definition of `fromElem': fromElem rest = ...
| 
| SVG10.hs:23590: Warning: Pattern match(es) are overlapped
|     In the definition of `fromElem': fromElem rest = ...
| 
| SVG10.hs:23649: Warning: Pattern match(es) are overlapped
|     In the definition of `fromElem': fromElem rest = ...
| 
| SVG10.hs:23708: Warning: Pattern match(es) are overlapped
|     In the definition of `fromElem': fromElem rest = ...
| 
| SVG10.hs:23779: Warning: Pattern match(es) are overlapped
|     In the definition of `fromElem': fromElem rest = ...
| 
| SVG10.hs:23871: Warning: Pattern match(es) are overlapped
|     In the definition of `fromElem': fromElem rest = ...
| 
| SVG10.hs:24048: Warning: Pattern match(es) are overlapped
|     In the definition of `fromElem': fromElem rest = ...
| 
| SVG10.hs:24145: Warning: Pattern match(es) are overlapped
|     In the definition of `fromElem': fromElem rest = ...
| 
| SVG10.hs:24234: Warning: Pattern match(es) are overlapped
|     In the definition of `fromElem': fromElem rest = ...
| 
| SVG10.hs:24431: Warning: Pattern match(es) are overlapped
|     In the definition of `fromElem': fromElem rest = ...
| 
| SVG10.hs:24971: Warning: Pattern match(es) are overlapped
|     In the definition of `fromElem': fromElem rest = ...
| 
| SVG10.hs:25019: Warning: Pattern match(es) are overlapped
|     In the definition of `fromElem': fromElem rest = ...
| 
| SVG10.hs:25089: Warning: Pattern match(es) are overlapped
|     In the definition of `fromElem': fromElem rest = ...
| 
| SVG10.hs:25240: Warning: Pattern match(es) are overlapped
|     In the definition of `fromElem': fromElem rest = ...
| 
| SVG10.hs:25305: Warning: Pattern match(es) are overlapped
|     In the definition of `fromElem': fromElem rest = ...
| 
| SVG10.hs:25616: Warning: Pattern match(es) are overlapped
|     In the definition of `fromElem': fromElem rest = ...
| 
| SVG10.hs:27998: Warning: Pattern match(es) are overlapped
|     In the definition of `fromElem': fromElem rest = ...
| 
| SVG10.hs:28730: Warning: Pattern match(es) are overlapped
|     In the definition of `fromElem': fromElem rest = ...
| 
| SVG10.hs:29472: Warning: Pattern match(es) are overlapped
|     In the definition of `fromElem': fromElem rest = ...
| Killed
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