Hi Antoine, hi Stefan,
On Wed, Apr 11, 2012 at 16:33, Antoine Pitrou wrote:
> I think Armin's plan is not to work at the bytecode level, but make
> transactions explicit (at least in framework code - e.g. Twisted or
> Stackless -, perhaps not in user code). Perhaps he can elaborate on
> that.
Ye
On Wed, 11 Apr 2012 15:31:09 +0200
Stefan Behnel wrote:
>
> Ok. I guess once the code is there, the hardware will eventually catch up.
>
> However, I'm not sure what you consider "large". A lot of manipulation
> operations for the builtin types are not all that involved, at least in the
> "norma
>> Yes, that's using STM on my regular laptop. How HTM would help
>> remains unclear at this point, because in this approach transactions
>> are typically rather large --- likely much larger than what the
>> first-generation HTM-capable processors will support next year.
>
> Ok. I guess once the c
Stefan Behnel, 11.04.2012 15:31:
> Armin Rigo, 11.04.2012 14:51:
>> On Wed, Apr 11, 2012 at 14:29, Stefan Behnel wrote:
>>> Did you do any experiments with running parallel code so far, to see if
>>> that scales as expected?
>>
>> Yes, it scales very nicely on small non-conflicting examples. I
>>
Armin Rigo, 11.04.2012 14:51:
> On Wed, Apr 11, 2012 at 14:29, Stefan Behnel wrote:
>>> Moreover the performance hit is well below 2x, more like 20%.
>>
>> Hmm, those 20% refer to STM, right? Without hardware support? Then hardware
>> support could be expected to drop that even further?
>
> Yes, t
Hi Stefan,
On Wed, Apr 11, 2012 at 14:29, Stefan Behnel wrote:
>> Moreover the performance hit is well below 2x, more like 20%.
>
> Hmm, those 20% refer to STM, right? Without hardware support? Then hardware
> support could be expected to drop that even further?
Yes, that's using STM on my regul
Armin Rigo, 11.04.2012 13:47:
> This is an update on the (so far PyPy-only) project of adding "Automatic
> Mutual Exclusion" to Python, via STM (Software Transactional Memory).
> [...]
> Moreover the performance hit is well below 2x, more like 20%.
Hmm, those 20% refer to STM, right? Without hardw
Hi all,
This is an update on the (so far PyPy-only) project of adding "Automatic
Mutual Exclusion" to Python, via STM (Software Transactional Memory).
For the motivation, see here:
http://morepypy.blogspot.com/2012/03/call-for-donations-for-software.html
"""The point is that [with STM/AME] your p
