How to do task-level parallelism in Windows?

I want to achieve better performance through parallelism. The
thread-level parallelism is not an option, because it is not really
parallel.

In Linux, kernel.fork makes it easy to achieve task level parallelism.

In windows, kernel.spawn seems to be the most closed equivalent.
However, it requires to specify the ruby.exe location and script
location explicitly, which may be not available at runtime.

Is there a better way to achieve task level parallelism in Windows?

On 05/10/2011 08:38 PM, Zd Yu wrote:

I want to achieve better performance through parallelism. The
thread-level parallelism is not an option, because it is not really
parallel.

Is jruby acceptable? Jruby threads do make use of multiple processors.

Joel VanderWerf wrote in post #997899:

On 05/10/2011 08:38 PM, Zd Yu wrote:

I want to achieve better performance through parallelism. The
thread-level parallelism is not an option, because it is not really
parallel.

Is jruby acceptable? Jruby threads do make use of multiple processors.

I need to use win32ole. I am afraid JRuby cannot do this.

On Tue, May 10, 2011 at 9:43 PM, Zd Yu [email protected] wrote:

Joel VanderWerf wrote in post #997899:

On 05/10/2011 08:38 PM, Zd Yu wrote:

I want to achieve better performance through parallelism. The
thread-level parallelism is not an option, because it is not really
parallel.

Is jruby acceptable? Jruby threads do make use of multiple processors.

I need to use win32ole. I am afraid JRuby cannot do this.

There is a jruby-win32ole gem – I haven’t used it, but it sounds like
it may do what you want.

Christopher D. wrote in post #997903:

On Tue, May 10, 2011 at 9:43 PM, Zd Yu [email protected] wrote:

Joel VanderWerf wrote in post #997899:

On 05/10/2011 08:38 PM, Zd Yu wrote:

I want to achieve better performance through parallelism. The
thread-level parallelism is not an option, because it is not really
parallel.

Is jruby acceptable? Jruby threads do make use of multiple processors.

I need to use win32ole. I am afraid JRuby cannot do this.

There is a jruby-win32ole gem – I haven’t used it, but it sounds like
it may do what you want.

I just tried it. It seems there are some compatible problems. My code
does not work with JRuby + jruby-win32ole, although it works well with
ruby + win32ole.

The error looks like:

Dispatch.java:-2:in `invokev’: org.racob.com.ComFailException: Invoke
of: Find
Source:
Description:

    from Dispatch.java:243:in `invokev'
    from Dispatch.java:187:in `callN'
    from RubyWIN32OLE.java:203:in `invokeMethodOrGet'
    from RubyWIN32OLE.java:112:in `method_missing'
    from RubyWIN32OLE$i$0$0$method_missing.gen:65535:in `call'
    from JavaMethod.java:642:in `call'
    from RuntimeHelpers.java:497:in `call'
    from CachingCallSite.java:345:in `callMethodMissing'
    from CachingCallSite.java:249:in `cacheAndCall'
    from CachingCallSite.java:71:in `call'
    from C:\my_tool.rb:1362:in `method__98$RUBY$find'

my code: (Excel manipulation)

keys = @workbook.Worksheets(“sheet name”).Range( “A1” ).EntireRow

current = keys.Find( value,
nil,
WIN32OLE::XlValues,
WIN32OLE::XlPart,
WIN32OLE::XlByColumns,
WIN32OLE::XlNext,
false,
false,
false )

==================
it seems the ‘Find’ method cannot be invoked.

Yes, ge ridden of windows.

2011/5/11 Zd Yu [email protected]

I need to use win32ole. I am afraid JRuby cannot do this.
Dispatch.java:-2:in invokev': org.racob.com.ComFailException: Invoke from RuntimeHelpers.java:497:incall’
current = keys.Find( value,
==================
it seems the ‘Find’ method cannot be invoked.


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A dignidade de Dilma!

[image: Dilmaldade.png]

On Wed, May 11, 2011 at 2:42 AM, Zd Yu [email protected] wrote:

I just tried it. It seems there are some compatible problems. My code
does not work with JRuby + jruby-win32ole, although it works well with
ruby + win32ole.

Please report this bug at http://bugs.jruby.org. We intend for
jruby-win32ole to be 100% compatible with MRI win32ole, and we would
like to fix this. Thank you!

  • Charlie

Charles Nutter wrote in post #998732:

On Wed, May 11, 2011 at 2:42 AM, Zd Yu [email protected] wrote:

I just tried it. It seems there are some compatible problems. My code
does not work with JRuby + jruby-win32ole, although it works well with
ruby + win32ole.

Please report this bug at http://bugs.jruby.org. We intend for
jruby-win32ole to be 100% compatible with MRI win32ole, and we would
like to fix this. Thank you!

  • Charlie

I have filed a bug to [email protected]:
https://github.com/enebo/jruby-win32ole/issues/3

On Sun, May 15, 2011 at 7:58 PM, Zd Yu [email protected] wrote:

I have filed a bug to [email protected]:
https://github.com/enebo/jruby-win32ole/issues/3

Thank you! Hopefully Tom will be able to look into it some time soon
(with RailsConf this week, it may be a bit).

  • Charlie

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