43 lines
		
	
	
		
			1.7 KiB
		
	
	
	
		
			Plaintext
		
	
	
	
	
	
			
		
		
	
	
			43 lines
		
	
	
		
			1.7 KiB
		
	
	
	
		
			Plaintext
		
	
	
	
	
	
| 
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| The default Linux Makefile (common/Makefile.machine.i686) uses /usr/bin/gawk
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| as the gawk interpreter.  To ensure correct working in UTF-8 locales run
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| /usr/bin/gawk --version and make sure it is at least version 3.1.5.
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| If not, it is recommended to install the latest version of gawk in
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| /usr/local/bin and update the GAWK variable accordingly.
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| 
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| -----------------------------------------------------------------------------
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| From:    Alex Franz <alex@google.com>
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| Date:    Fri, 06 Oct 2000 16:14:03 PDT
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| 
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| And, here are the details of the malloc problem that I had with the SRI
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| LM toolkit:
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| 
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| I compiled it with gcc under Redhat Linux V. 6.2 (or thereabouts). 
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| The malloc routine has problems allocating large numbers of 
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| small pieces of memory. For me, it usually refuses to allocate
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| any more memory once it has allocated about 600 MBytes of memory,
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| even though the machine has 2 GBytes of real memory.
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| 
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| This causes a problem when you are trying to build language models
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| with large vocabularies. Even though I used -DUSE_SARRAY_TRIE -DUSE_SARRAY
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| to use arrays instead of hash tables, it ran out of memory when I was
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| trying to use very large vocabulary sizes.
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| 
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| The solution that worked for me was to use Wolfram Gloger's ptmalloc package 
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| for memory management instead. You can download it from 
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| 
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|   http://malloc.de/en/index.html
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| 
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| (The page suggests that it is part of the Gnu C library, but I had to
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| compile it myself and explicitly link it with the executables.)
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| 
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| One more thing you can do is call the function
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| 
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|   mallopt(M_MMAP_MAX, n);  
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| 
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| with a sufficiently large n; this tells malloc to allow you to
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| obtain a large amount of memory.
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| 
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| ------------------------------------------------------------------------------
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| 
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