Persistent Memory

Persistent Memory

Participants

Leonardo Marmol
Mohammad Chowdhary
Muminul Islam
Raju Rangaswami

Project Goals

  Using Byte-addressable persistent memory in systems.

User Level Library

* Dedicated page for the user space library

Kernel Support

TODO: link to dedicated page

Related Literature

Better I/O Through Byte-Addressable, Persistent Memory (BPFS) sosp09.pdf
NV-Heaps: Making Persistent Objects Fast and Safe with Next-Generation, Non-Volatile Memories asplos2011_nvheaps.pdf
Mnemosyne: Lightweight Persistent Memory mnemosyne-asplos2011.pdf
Linux kernel support to exploit phase change memory ols2010-pages-217-224.pdf
Intel® 64 and IA-32 Architectures Software Developer’s Manual

Meetings

07/13/15: Ata/Leo: Paper discussions
07/02/15: Ata: Reviewer comments from HotStorage submission
06/23/15: TBD
06/23/15: (Leo) Paper abstract + Optimizing CoW snapshot/current versions
06/19/15: (Ata) Solution review + updates
06/16/15: (Leo) pmLib and language-port updates
06/16/15: (Ata) IPI design updates
06/12/15: Intel call – plans for compiler work (beyond Cheng)
06/12/15: Ata – IPI implementation updates
06/09/15: Ata – brief brainstorming
06/09/15: Leo – new data, alternate directions for intern, and plans for writing
06/02/15: TBD
05/22/15: IPI sync design improvements
05/22/15: IPI sync design improvements
05/15/15: Design for sync using IPI – updates
05/08/15: Region system – sync design using IPI
05/05/15: Ata paper writing – comparison with failure-atomic sync and design for atomic pmsync
04/25/15: Atomicity for pmsync in region system
04/24/15: Addressing comments from HotStorage'15 submission
04/17/15: Intel call
04/14/15: Updates
04/03/15: Call with Youfeng: Plans for replacing page #s with persistent pointers
04/02/15: Call with Dulloor: Setting up / Using PMEP node
03/31/15: pmLib paper (intro outline)
03/27/15: pmLib delete discussion
03/24/15: region system and pmLib updates
03/20/15: Intel meeting - SQLite integration discussion and next steps
03/16/15: HotStorage submission discussion
03/09/15: Ata: HotStorage'15 Motivation discussion
03/06/15: Intel meeting
03/05/15: HotStorage paper plans
03/03/15: HotStorage paper plans
02/27/15: Ata - motivation; Leo: next steps; Daniel: update
02/24/15: TBD
02/13/15: TBD
02/10/15: TBD
02/03/15: TBD
01/27/15: TBD
01/22/15: Ata – introduction discussion
01/20/15: Leo – updates on closure
01/13/15: General updates overall
01/08/15: Updates after break
12/19/14: Ata: brainstorming on paper
12/16/14: Ata on paper and Leo on closure design
12/09/14: Updates Ata and Daniel. Leo discusses new design
12/02/14: New Intel Instructions + PM latency emulation discussion
11/25/14: Closure implementation updates
11/18/14: Updates from Ata, Leo
11/11/14: Leo development/writing
11/04/14: Ata related-work table, Daniel HyperSim/PMEP, Leo updates
10/31/14: Ata paper storyline and writing tasks
10/28/14: Updates
10/21/14: Updates
10/14/14: Testing pmLib; Experiments for region system; pmLib updates;
10/14/14: Testing pmLib; Experiments for region system; pmLib updates;
10/07/14: Status review and next steps
09/09/14: Pmlib / Cmake updates
09/02/14: Pmlib updates
08/26/14: New directions for pmlib paper
08/19/14: Correctness discussion revisiting the Yat conditions
08/12/14: Cmake update; Yat paper brief discussion; Next steps for Leo
08/05/14: (Leo) Daniel's tasks and project task prioritization
07/29/14: (Leo) Project Tasks?
07/22/14: (Leo) Optimizations vs correctness/implementation
07/15/14: (Leo,Daniel) Daniel's next steps and plans for motivating pointer optimization
07/01/14: (Leo) Code/design review; next steps for code review/update
06/24/14: (Leo,Daniel) Tasks for Daniel; Reviewing persistence/consistency of metadata
06/06/14: (Ata/Russell) Updates and plans for paper writing
05/08/14: (Leo) Current data on PM Library
05/08/14: (Ata/Russell) Current data on Region Manager
04/22/14: (Ata) Paper motivation and comparision with PMFS
04/15/14: (Ata/Russell) Paper outline review
04/08/14: (Ata/Russell) Paper story discussion
04/03/14: (Leo) Brainstorming Intel and SoftPM projects
03/28/14: (Russell) Algorithms for pmsync and CoW fault handling
03/25/14: (Ata/Russell) Paper outline discussion
03/20/14: (Ata/Russell) Paper outline discussion
03/18/14: (Ata/Russell) Updates on implementation
03/06/14: (Ata/Russell) HotStorage paper – initial discussion
02/25/14: (Ata/Russell) Internal design details for CoW and memory allocator
02/11/14: (Ata/Russell) memory allocator implemented – needs testing; write-protection for CoW has issues
02/04/14: (Ata/Russell) pmmap implemented – needs further testing; persistence remains
01/09/14: (Leo) Break updates and Intel Presentation Discussion
01/07/14: (Ata/Russell) Break updates
12/23/13: (Ata/Russell) Brief design discussion
12/13/13: (Ata/Russell) Reviewing metadata consistency issues
12/13/13: (Leo) Status update
12/04/13: SoftPM eval updates and detailed design discussion (Part 1) of NVM region system
11/22/13: SoftPM for NVM design discussion
11/20/13: Design alternatives for metadata indexing, SoftPM pointer fixing / restore / static mapping etc.
11/13/13: Brief updates
11/06/13: open/create initial review, softpm initial review
10/30/13: Updates
10/23/13: Updates
10/18/13: SoftPM design discussion for PMFS and Region System
10/16/13: Updates on page allocation; SoftPM overview
10/09/13: Updates on page allocation; persistence implementation
10/02/13: Custom allocation, mapping, free-space bitmap
09/25/13: New NVM ZONE created and tested, need to implement custom page allocator, SoftPM + PMFS intergration discussion
09/18/13: Updates on ZONES implementation, code inspection, Updates on PMFS install attempt
09/11/13: Updates on ZONES, plan for library implementation
09/04/13: Discussion of library design using SoftPM, use of Linux ZONES
08/28/13: Discussion continued: How to export and manage DRAM as NVRAM inside OS
08/21/13: How to export and manage DRAM as NVRAM inside OS
08/14/13: Syscall shells done; pmsync details for implementaiton
08/07/13: Brief discussion on pmsync/hw-support and syscall implementation update
07/31/13: Data structures and function design mostly stable
07/24/13: Review of updated design document and feedback
07/17/13: Detailed design review and feedback
07/10/13: Initial design discussion (partial)
07/03/13: Reviewing assumptions and direction with Ata, Muminul
04/29/13: Evaluation plan /summer plan review
04/18/13: Full paper initial discussion; evaluation of use cases 1 and 2
03/09/13: NVM stack review, paper direction and organization, paper writing tasks
03/07/13: Input from Nisha and Swami on paper message, writing tasks
03/07/13: Two paper messages (file vs. memory)
02/25/13: Discussing paper abstract and outline, core messages
02/21/13: HotStorage'13 paper story-line brainstorming (solution for absolute pointers)
02/18/13: HotStorage'13 paper planning (story-line, outline)
12/05/12: Initial ideas (session 2)
12/04/12: Initial ideas (session 1)