Re: [GHC] #10682: AArch64: dll-split: out of memory (requested 1099512676352 bytes)

28 Aug 2015

      #10682: AArch64: dll-split: out of memory (requested 1099512676352 bytes)
-------------------------------------+-------------------------------------
        Reporter:  erikd             |                   Owner:
            Type:  bug               |                  Status:  patch
        Priority:  normal            |               Milestone:  7.12.1
       Component:  Compiler          |                 Version:  7.11
      Resolution:                    |                Keywords:
Operating System:  Unknown/Multiple  |            Architecture:  aarch64
 Type of failure:  Building GHC      |               Test Case:
  failed                             |
      Blocked By:                    |                Blocking:
 Related Tickets:                    |  Differential Revisions:  Phab:D1171
-------------------------------------+-------------------------------------

Comment (by Erik de Castro Lopo ):

 In [changeset:"38c98e4f61a48084995a5347d76ddd024ce1a09c/ghc" 38c98e4/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="38c98e4f61a48084995a5347d76ddd024ce1a09c"
 RTS: Reduce MBLOCK_SPACE_SIZE on AArch64

 Commit 0d1a8d09f4 added a two step allocator for 64 bit systems. This
 allocator mmaps a huge (1 TB) chunk of memory out of which it does
 smaller allocations. On AArch64/Arm64 linux, this mmap was failing
 due to the Arm64 Linux kernel parameter CONFIG_ARM64_VA_BITS
 defaulting to 39 bits.

 Therefore reducing the AArch64 value for MBLOCK_SPACE_SIZE to make
 this allocation 1/4 TB while remaining 1 TB for other archs.

 Reviewers: ezyang, austin, bgamari

 Subscribers: thomie

 Differential Revision: https://phabricator.haskell.org/D1171

 GHC Trac Issues: #10682
 }}}

--
Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/10682#comment:12
GHC http://www.haskell.org/ghc/
The Glasgow Haskell Compiler