Quote:
Originariamente inviato da nonsidice
Sarebbe curioso sapere che hw ha usato l'utente e quanto ci ha messo  |
C'è scritto.
L'attuale record è stato 3,5 volte più veloce di quello del tizio provato nel 2020
Quindi a grandi linee, 108 x 3,5 = 378
Ci ha messo un pò più di un anno.
Sull'hardware, leggendo in giro ho scoperto che il tizio si chiama Timothy Mullican, e questa è la sua lista hardware:
HP PROLIANT DL580 Gen8
This server (Ubuntu 18.10) performs the Pi computation. The final compressed Pi digits will be transferred to the Dell R720xd via a cifs-mounted directory (/drives/main_output).
(4) Intel Xeon E7-4880V2 2.5GHz 15C/30T CPU
320GB DDR3 PC3-8500R ECC RAM
(5) 2.5” 100GB SATA MLC SSD (RAID 6)
(4) 6Gb LSI 9207-8e Dual Port SAS HBA
Connected to each HPE D3600 disk shelf via single SFF-8088 to SFF-8644 cable 2m
Intel 10-Gigabit X540-AT2 Dual Port Ethernet Adapter
Dedicated link to Dell R720xd for Veeam backups
Intel 1-Gigabit I340-T4 Quad Port Ethernet Adapter
Connection to the Internet
(4) HP StorageWorks D3600
These drives are used to perform computations in lieu of server memory (known as y-cruncher Swap Mode7) to provide the resources required to calculate Pi (mounted on the DL580 as /drives/1 - /drives/48). I originally used HP StorageWorks D2600 disk shelves, but I didn’t realize the SATA backplane was limited to 3Gb/s. I upgraded to the D3600 disk shelf which supports 6Gb/s SATA in June of 2019.
(12) 3.5” 6TB SATA 7.2K HGST Ultrastar He8 HDD (JBOD)
Dell PowerEdge R720xd
This server (Windows Server 2016) serves two primary purposes. First, it is connected to the HP tape library. A Veeam job is manually run each month, which backs up data from the 48 drives running the Pi computation directly to tape. Second, it has an additional RAID6 storage volume (see Dell PowerVault MD1200) which will contain the 50 trillion compressed Pi digits.
(2) Intel Xeon E5-2670 8C/16T CPU
128GB DDR3 ECC RAM
(2) 2.5” 600GB SAS 10K Seagate HDD (RAID1)
Emulex LPE 12002, Dual Port 8Gb Fiber Channel HBA
Connected to tape library using (2) LC-LC OM3 2m fiber cables
Dell PERC H810 Adapter 6Gb RAID Controller Card
Connected to Dell MD1200 disk shelf
Dell PowerVault MD1200
These drives will contain the compressed Pi digits that y-cruncher generates at the end of the computation.
40TB (RAID6)
(7) 3.5” 4TB 7.2K SAS HGST Hitachi
(5) 3.5” 4TB 7.2K SAS Seagate Constellation ES.3
HPE StoreEver MSL4048 Tape Library
This tape library will contain monthly backups of the forty-eight computation drives.
LTO-5 FC Tape Drive
(47) LTO Ultrium 5 Tape Data Cartridge 1.5TB