Announcement: 11th International Conference on Parallel Programming and Applied Mathematics

The conference will start in September 6-9, 2015, Krakow, Poland.

Parallel Programming and Applied Mathematics, PPAM for short, is a biennial conference started in 1994, with the proceedings published by Springer in the Lecture Notes in Computer Sciences series, see PPAM. It is sponsored by IBM, Intel, Springer, AMD, RogueWave, and HP. The last conference had a fee of 420 EUR.

It is held in conjunction with 6th Workshop on Language based Parallel Programming.

Prominent speakers are:

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dotScale 2013 MySQL Talk

Very interesting talk on the scaling challenge at WordPress.com given by Barry Abrahamson, CTO of WordPress.

Some key points:

  1. 500 million database tables
  2. 3 data centers in USA
  3. 400.000 shards moved per day
  4. storage on SSD
  5. ~10% of total infrastructure costs are related to backups
  6. ~500 GB / shard
  7. 50 million sites
  8. 2.200 servers, and 500 database servers

Compare this with infrastructure costs for WordPress.

Barry on WordPress

In June, I gave a talk at the dotScale conference in Paris about WordPress.com’s MySQL database architecture and infrastructure. The video is now online:

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