Re: [Gems-users] fast forwarding mode in Ruby/Opal

[Alaa Alameldeen <alaa@xxxxxxxxxxx>]

If you just want to warm up the cache, you can use Ruby without Opal. This 
should give you significant speedup. Since for the most part we want the cache 
warmed up for all our runs. we save a warm-cache file for each of our workloads, 
and then load from it to start a new run.

To get a cache warmup file:
<...start from a checkpoint, do all required initialization...>
load-module ruby
ruby0.init
<....run simics for the amount of time you want...>
write-configuration <checkpoint_file_name>
ruby0.save-caches <cache_file_name>
quit

Now to use that warmup file:
read-configuration <checkpoint_file_name>
<...do all required initialization...>
load-module opal
load-module ruby
ruby0.init
opal0.init
ruby0.load-caches <cache_file_name>
<...run your simulation...>
<...print Ruby and/or Opal statistics...>
quit

I hope that helps.

-Alaa

Weihang Jiang wrote:
> Hi,
>   Is there a fast forwarding mode in Ruby and Opal? I want to warm up the cache.