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rstm's Introduction

RSTM Release 7 Notes

The latest RSTM release features the following changes:

- Support for the Intel Transactional C++ Compiler

- Several new algorithms and performance improvements

- Support for 64-bit environments

- A simpler microbenchmark harness

- New build system based on cmake

- Support for dynamic profiling of transactions, and machine-learning-based
  adaptivity policies

Important Build Notes

- We strongly encourage you to build **outside** of the source tree.  The
  following example assumes that you have this file located in
  /home/yourname/rstm:

  cd /home/yourname/
  mkdir rstm_build
  cd rstm_build
  cmake ../rstm
  make

- If you want to specify build options (e.g., 32-vs-64-bit), you can do an
  interactive configure by setting the '-i' flag when invoking cmake:

  cmake ../rstm -i

Please visit the RSTM Google code site for more information:

http://code.google.com/p/rstm

rstm's People

Contributors

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rstm's Issues

munmap can cause inconsistent segfaults 

What steps will reproduce the problem?
1. Perform a transaction that privatizes some locations, and then munmap the 
privatized locations non-transactionally.
2. Concurrently execute a speculative transaction that conditionally 
dereferences said locations.
3. Run for a "long time" time.

What is the expected output? 

Results consistent with single-lock semantics.

What do you see instead?

Segmentation faults from the speculative transactions due to privatization 
safety violations.

Workaround?

Perform all munmap operations inside [[relaxed]] transactions.

Original issue reported on code.google.com by [email protected] on 11 Jul 2011 at 5:02

no support for C++ STM nested __cancel operations 

What steps will reproduce the problem?
1. Perform a __cancel from a nested transaction.

What is the expected output? 

Execution as-if the nested transaction had canceled.

What do you see instead?

Unpredictable results leading to failures.

Workaround?

None at the moment. `libstm` does not support closed nested transactions and 
thus we cannot support nested __cancel operations. We /do/ support 
__cancel_outer operations.

Please use labels and text to provide additional information.

Original issue reported on code.google.com by [email protected] on 11 Jul 2011 at 5:05

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