Here are a few links that might be useful:

·  The textbook Companion site

·  WWW Computer Architecture Page

·  The ACM International Symposium on Computer Architecture

·  The International Symposium on High-Performance Computer Architecture

Simulators

· Simplescalar:

http://www.simplescalar.com/

· PTLSim:

http://www.ptlsim.org/

· Simics and GEMS:

http://www.virtutech.com/ 

http://www.cs.wisc.edu/gems/

· Disksim: 

http://www.pdl.cmu.edu/DiskSim/

· SESC:

http://sesc.sourceforge.net/

· CMP-SIM:

http://www.utdallas.edu/~rama.sangireddy/CMP-SIM/

· M5:

http://m5.eecs.umich.edu/wiki/index.php/Main_Page 
          

Workloads

· Benchmarks for SimpleScalar (Including Spec2000 PISA binaries):

http://www.simplescalar.com/benchmarks.html

· BioInfoMark (Bioinformatics Benchmark Suite):

http://www.ideal.ece.ufl.edu/main.php?action=bioinfomark

· BioBench (Bioinformatics Benchmark Suite):

http://www.ece.umd.edu/biobench/

· MineBench (Data Mining Benchmark Suite):

http://cucis.ece.northwestern.edu/projects/DMS/MineBench.html

· MediaBench (Multimedia Benchmark Suite):

http://euler.slu.edu/~fritts/mediabench/

· PhysicsBench (Physics simulation benchmarks for future games):

http://sourceforge.net/projects/physicsbench/