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AWS Inferentia Machine Learning Processor – Perspectives

Disclaimer: The opinions expressed here are my own and do not necessarily represent those of current or past employers. Recent CommentsDenis Azarov on How Many Data Centers Needed World-WideJames Hamilton on Airline Overbooking isn’t EvilRufus McDufus on Airline Overbooking isn’t EvilFernando on Amazon Elastic Block Store at 15 YearsDennis Marquard on KVH Industries TourJames Hamilton on How Many

rawwell 2020/08/04

“We support ONNX (https://onnx.ai/) as the industry most commonly used exchange format for neural network, and interface natively with the three popular frameworks: MxNet, PyTorch, and TensorFlow, providing customers with choices.”

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AWS Nitro System – Perspectives

Disclaimer: The opinions expressed here are my own and do not necessarily represent those of current or past employers. Recent CommentsDenis Azarov on How Many Data Centers Needed World-WideJames Hamilton on Airline Overbooking isn’t EvilRufus McDufus on Airline Overbooking isn’t EvilFernando on Amazon Elastic Block Store at 15 YearsDennis Marquard on KVH Industries TourJames Hamilton on How Many

rawwell 2020/06/26

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Web Search Using Small Cores – Perspectives

Disclaimer: The opinions expressed here are my own and do not necessarily represent those of current or past employers. Recent CommentsMatt on Seagate HAMRJames Hamilton on Seagate HAMRMatt on Seagate HAMRJames Hamilton on Cost of Power in Large-Scale Data CentersChris K. on Cost of Power in Large-Scale Data CentersJames Hamilton on Cost of Power in Large-Scale Data CentersRob F on Cost of Power i

rawwell 2012/12/07

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Amazon SimpleDB Developer Guide – Perspectives

Disclaimer: The opinions expressed here are my own and do not necessarily represent those of current or past employers. Recent CommentsMatt on Seagate HAMRJames Hamilton on Seagate HAMRMatt on Seagate HAMRJames Hamilton on Cost of Power in Large-Scale Data CentersChris K. on Cost of Power in Large-Scale Data CentersJames Hamilton on Cost of Power in Large-Scale Data CentersRob F on Cost of Power i

rawwell 2012/12/07

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Google Megastore – Perspectives

Disclaimer: The opinions expressed here are my own and do not necessarily represent those of current or past employers. Recent CommentsMatt on Seagate HAMRJames Hamilton on Seagate HAMRMatt on Seagate HAMRJames Hamilton on Cost of Power in Large-Scale Data CentersChris K. on Cost of Power in Large-Scale Data CentersJames Hamilton on Cost of Power in Large-Scale Data CentersRob F on Cost of Power i

rawwell 2010/10/10

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VPN over WiMAX – Perspectives

rawwell 2010/07/16

But one that has been driving me especially nuts is frequent dropped connections and hangs when using the VPN over WiMAX. It appears to happen more frequently when there is more data in flight but to lose a connection every few minutes is quite common. It turns out the problem is the default MTU

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Clustrix Database Appliance – Perspectives

Disclaimer: The opinions expressed here are my own and do not necessarily represent those of current or past employers. Recent CommentsMatt on Seagate HAMRJames Hamilton on Seagate HAMRMatt on Seagate HAMRJames Hamilton on Cost of Power in Large-Scale Data CentersChris K. on Cost of Power in Large-Scale Data CentersJames Hamilton on Cost of Power in Large-Scale Data CentersRob F on Cost of Power i

rawwell 2010/07/16

"Going with a shared nothing architecture avoids dependence on expensive shared storage area networks and the scaling bottleneck of distributed lock managers. Each node in the cluster is an independent database engine with its own physical (local) metadata, storage engine, lock manager, buffer mana

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FriendFeed use of MySQL – Perspectives

rawwell 2010/07/16

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Wikipedia Architecture – Perspectives

rawwell 2010/07/16

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Cloud Data Freedom – Perspectives

rawwell 2010/07/15

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Is Sandia National Lab’s Red Sky Really Able to Deliver a PUE of 1.035? – Perspectives

Disclaimer: The opinions expressed here are my own and do not necessarily represent those of current or past employers. Recent CommentsMatt on Seagate HAMRJames Hamilton on Seagate HAMRMatt on Seagate HAMRJames Hamilton on Cost of Power in Large-Scale Data CentersChris K. on Cost of Power in Large-Scale Data CentersJames Hamilton on Cost of Power in Large-Scale Data CentersRob F on Cost of Power i

rawwell 2010/07/08

Note that a PUE of 1.035 is technically possible with waste heat recovery and, in fact, even less than 1.0 can be achieved with waste heat recovery. See the “PUE less than 1.0” section of PUE and Total Power Usage Efficiency for more data on waste heat recovery. Remember this is “technically

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SSD versus Enterprise SATA and SAS disks – Perspectives

In Where SSDs Don’t Make Sense in Server Applications, we looked at the results of a HDD to SSD comparison test done by the Microsoft Cambridge Research team. Vijay Rao of AMD recently sent me a pointer to an excellent comparison test done by AnandTech. In SSD versus Enterprise SAS and SATA disks, Anandtech compares one of my favorite SSDs, the Intel X25-E SLC 64GB, with a couple of good HDDs. The

rawwell 2010/07/08

"As it turns out, when looking at random I/O workloads, SSDs are almost always capacity bound and HDDs are almost always IOPS bound. Understanding that we can use a simple computation to compare HDD cost vs SSD cost on your workload. Take the HDD farm cost which will be driven by the number of disk

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You really DO need ECC Memory – Perspectives

Disclaimer: The opinions expressed here are my own and do not necessarily represent those of current or past employers. Recent CommentsMatt on Seagate HAMRJames Hamilton on Seagate HAMRMatt on Seagate HAMRJames Hamilton on Cost of Power in Large-Scale Data CentersChris K. on Cost of Power in Large-Scale Data CentersJames Hamilton on Cost of Power in Large-Scale Data CentersRob F on Cost of Power i

rawwell 2010/07/08

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Perspectives - Stonebraker on CAP Theorem and Databases

Disclaimer: The opinions expressed here are my own and do not necessarily represent those of current or past employers. Recent CommentsMatt on Seagate HAMRJames Hamilton on Seagate HAMRMatt on Seagate HAMRJames Hamilton on Cost of Power in Large-Scale Data CentersChris K. on Cost of Power in Large-Scale Data CentersJames Hamilton on Cost of Power in Large-Scale Data CentersRob F on Cost of Power i

rawwell 2010/07/08

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Replacing ALL disk with SSD? – Perspectives

Disclaimer: The opinions expressed here are my own and do not necessarily represent those of current or past employers. Recent CommentsMatt on Seagate HAMRJames Hamilton on Seagate HAMRMatt on Seagate HAMRJames Hamilton on Cost of Power in Large-Scale Data CentersChris K. on Cost of Power in Large-Scale Data CentersJames Hamilton on Cost of Power in Large-Scale Data CentersRob F on Cost of Power i

rawwell 2010/02/08

"The argument made in the article is that power savings of flash over SSD justify the cost per GB delta. I can’t make that math even get close to working. In Annual Fully Burdened Cost of Power we looked at the cost of fully provisioned power and found that if we include power distribution costs,

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Rough notes from Selected Sessions at Google IO Day 1 – Perspectives

rawwell 2009/05/28

"Big table only supports scan. No sorting and no filtering. o Because they have no knowledge of the app or data shape, they convert all queries to scans since that is all BigTable can do. o Indexes: § Kind Index (kind, key) where kind is child, grandparent, parent, … § Single-property ind

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Facebook Cassandra Architecture and Design – Perspectives

Disclaimer: The opinions expressed here are my own and do not necessarily represent those of current or past employers. Recent CommentsMatt on Seagate HAMRJames Hamilton on Seagate HAMRMatt on Seagate HAMRJames Hamilton on Cost of Power in Large-Scale Data CentersChris K. on Cost of Power in Large-Scale Data CentersJames Hamilton on Cost of Power in Large-Scale Data CentersRob F on Cost of Power i

rawwell 2009/03/23

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Jeff Dean on Google Infrastructure – Perspectives

Disclaimer: The opinions expressed here are my own and do not necessarily represent those of current or past employers. Recent CommentsMatt on Seagate HAMRJames Hamilton on Seagate HAMRMatt on Seagate HAMRJames Hamilton on Cost of Power in Large-Scale Data CentersChris K. on Cost of Power in Large-Scale Data CentersJames Hamilton on Cost of Power in Large-Scale Data CentersRob F on Cost of Power i

rawwell 2009/03/17

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Structure 2008: Put Cloud Computing to Work – Perspectives

rawwell 2009/03/17

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Google Seattle Conference on Scalability – Perspectives

Earlier today Google hosted the second Seattle Conference on Scalability. The talk on Chapel was a good description of a parallel language for high performance computing being implemented done at Cray. The GIGA+ talk described a highly scala ble filesystem metadata system implemented in Garth Gibson’s lab at CMU. The Google presentation described how they implemented maps.google.com on various mobi

rawwell 2009/03/14

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