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GHC on SPARC

Monday, February 15, 2010. Memory Barriers and GHC 6.12.1. I've moved to UNSW (University of New South Wales) to help with the DPH (Data Parallel Haskell). Project. The first order of business has been to make a SPARC/Solaris binary release for 6.12.1. It looks like this week will be spent spelunking through the runtime system trying to find the source of #3875. Somewhere in the runtime system, and if that's true then it's going to be tricky to find. According to this wikipedia page. One of the main ques...

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GHC on SPARC | ghcsparc.blogspot.com Reviews

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Monday, February 15, 2010. Memory Barriers and GHC 6.12.1. I've moved to UNSW (University of New South Wales) to help with the DPH (Data Parallel Haskell). Project. The first order of business has been to make a SPARC/Solaris binary release for 6.12.1. It looks like this week will be spent spelunking through the runtime system trying to find the source of #3875. Somewhere in the runtime system, and if that's true then it's going to be tricky to find. According to this wikipedia page. One of the main ques...

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1 ghc on sparc

2 posted by

3 ben lippmeier

4 5 comments

5 the cas experiment

6 compare and swap

7 the experiment

8 comparison with x86

9 push %eax

10 mov %ebx %eax

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GHC on SPARC | ghcsparc.blogspot.com Reviews

https://ghcsparc.blogspot.com

Monday, February 15, 2010. Memory Barriers and GHC 6.12.1. I've moved to UNSW (University of New South Wales) to help with the DPH (Data Parallel Haskell). Project. The first order of business has been to make a SPARC/Solaris binary release for 6.12.1. It looks like this week will be spent spelunking through the runtime system trying to find the source of #3875. Somewhere in the runtime system, and if that's true then it's going to be tricky to find. According to this wikipedia page. One of the main ques...

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ghcsparc.blogspot.com

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GHC on SPARC: Instruction counts on x86 vs SPARC

http://ghcsparc.blogspot.com/2009/04/instruction-counts-on-x86-vs-sparc.html

Tuesday, April 14, 2009. Instruction counts on x86 vs SPARC. Here are breakdowns of the total number of instructions executed on a Pentium-M processor and the SPARC T2 for four of the nofib/parallel benchmarks. The vertical axis is gig-instructions (x10 9). The benchmarks were run with just a single thread ( RTS -N1). The figures were recorded using hardware performance counters. Library, generously provided by Daniel Frampton's. Sethi %hi( module registered),%g2. Or %g2,%lo( module registered),%g2.

2

GHC on SPARC: 2009-01-18

http://ghcsparc.blogspot.com/2009_01_18_archive.html

Thursday, January 22, 2009. Spent time reading about hardware performance counters while waiting for builds and test runs. Realised that I had built the RTS with -fvia-c before, so there are still a couple of NCG things to fix before we can do a full stage2 -fasm build. The RTS code uses a machine op MO WriteBarrier that compiles to a nop on i386, but uses the LWSYNC instruction on PPC. I still have to read about that and work out what to do for sparc. Time lwp event %tick pic0 pic1. I'll post some nice ...

3

GHC on SPARC: Pinning threads to cores

http://ghcsparc.blogspot.com/2009/03/pinning-threads-to-cores.html

Monday, March 23, 2009. Pinning threads to cores. The following graphs show runs of the nofib/parallel benchmarks sumeuler, parfib and mandel, run with a varying number of Haskell threads ( RTS -N1 . -N14). This is less true for parfib. Note from the max issue rate graph that parfib achieves the peak single-core issue rate of 2.33 gig instrs/sec with only 6 threads. This implies the program is integer bound, not load/store bound. It is managing to issue two instructions on every cycle, an...In all cases,...

4

GHC on SPARC: 2010-02-14

http://ghcsparc.blogspot.com/2010_02_14_archive.html

Monday, February 15, 2010. Memory Barriers and GHC 6.12.1. I've moved to UNSW (University of New South Wales) to help with the DPH (Data Parallel Haskell). Project. The first order of business has been to make a SPARC/Solaris binary release for 6.12.1. It looks like this week will be spent spelunking through the runtime system trying to find the source of #3875. Somewhere in the runtime system, and if that's true then it's going to be tricky to find. According to this wikipedia page.

5

GHC on SPARC: Peak issue rate is 18.64 Gig instrs/sec

http://ghcsparc.blogspot.com/2009/03/peak-issue-rate-is-1864-gig-instrssec.html

Thursday, March 19, 2009. Peak issue rate is 18.64 Gig instrs/sec. This plot confirms the number for the peak instruction issue rate that I presented yesterday. On the T2 at 1165Mhz we get 18.64 Gig instructions/sec. The test program spawns 64 threads that execute the following loop 10 8 times. Add %o0, %o1, %o2. Add %o1, %o2, %o3. Add %o3, %o4, %o5. Add %o5, %o6, %o7. Sub %l3, 1, %l3. Subx %l2, 0, %l2. Cmp %g0, %l3. Subscribe to: Post Comments (Atom). Peak issue rate is 18.64 Gig instrs/sec.

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haskellorg.wordpress.com

The haskell.org committee has formed | haskell.org news

https://haskellorg.wordpress.com/2010/11/15/the-haskell-org-committee-has-formed

Status updates about haskell.org services. The haskell.org committee has formed. In recent years,. Has started to receive assets, e.g. Google Summer Of Code funds. And a Sparc machine. For use in GHC development. We have also started spending this money: on the community server. On a server to take over hosting. Haskell.org itself, and on the haskell.org domain name. There is also interest in running fundraising drives for specific things such as Hackathon sponsorship and hosting fees. Edward Z. Yang.

haskellorg.wordpress.com

November | 2010 | haskell.org news

https://haskellorg.wordpress.com/2010/11

Status updates about haskell.org services. Monthly Archives: November 2010. The haskell.org committee has formed. November 15, 2010 – 6:12 pm. In recent years,. Has started to receive assets, e.g. Google Summer Of Code funds. And a Sparc machine. For use in GHC development. We have also started spending this money: on the community server. On a server to take over hosting. To resolve who is responsible for haskell.org’s infrastructure. Development, open nominations were held. A haskell.org committee.

benl.ouroborus.net

Ben Lippmeier

http://benl.ouroborus.net/projects.html

DPH - Data Parallel Haskell. Data Parallel Haskell is a long standing project to implement the flattening approach to Nested Data Parallelism (NDP) in an industrial strength compiler. Getting it working is one thing, but getting it fast is another. Gaze upon the current implementation and delight in the myriad ways that humans still don't understand computer science. Paper) Data Flow Fusion with Series Expressions in Haskell. Paper) Work Efficient Higher-Order Vectorisation. For the native code generator.

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ghcsparc.blogspot.com

GHC on SPARC

Monday, February 15, 2010. Memory Barriers and GHC 6.12.1. I've moved to UNSW (University of New South Wales) to help with the DPH (Data Parallel Haskell). Project. The first order of business has been to make a SPARC/Solaris binary release for 6.12.1. It looks like this week will be spent spelunking through the runtime system trying to find the source of #3875. Somewhere in the runtime system, and if that's true then it's going to be tricky to find. According to this wikipedia page. One of the main ques...

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