NEW: March 2019: Three papers are accepted in ISCA 2019.
NEW: February 2019: Two papers are accepted in PLDI 2019.
NEW: January 2019: InvisiSpec paper receives an Honorable Mention in the 2019 IEEE Micro's Top Picks from Computer Architecture Conferences.
NEW: Two excellent Ph.D. students are graduating and looking for an academic job starting Fall 2019: Mengjia Yan, and Raghavendra Pothukuchi. Please check their resumes.
NEW: December 2018: We published the Report on the NSF-sponsored Visioning Workshop on Inter-Disciplinary Research Challenges in Computer Systems.
NEW: November 2018: One paper is accepted in ASPLOS 2019.
NEW: November 2018: Two papers are accepted in HPCA 2019.
NEW: July 2018: A paper is accepted in MICRO 2018: InvisiSpec: Making Speculative Execution Invisible in the Cache Hierarchy


The i-acoma Architecture Group, led by Professor Josep Torrellas, focuses on new processor, memory, and system technologies and organizations to build novel multiprocessor computer architectures. The two main projects are:

Recent Designed Architectures:

The emphasis research areas in the group are:

We have released these software tools:

  • VARIUS: A model of within-die process variation and resulting timing errors in processors for microarchitects.
  • SESC: A cycle accurate architectural simulator that models a very wide set of architectures: superscalars, multiprocessors, processors in memory, and thread-level speculation.

Our research is funded by NSF, DARPA, and DOE.