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YouTube ã§ãŠæ°—ã«å…¥ã‚Šã®å‹•ç”»ã‚„éŸ³æ¥½ã‚’æ¥½ã—ã¿ã€ã‚ªãƒªã‚¸ãƒŠãƒ«ã®ã‚³ãƒ³ãƒ†ãƒ³ãƒ„ã‚’ã‚¢ãƒƒãƒ—ãƒãƒ¼ãƒ‰ã—ã¦å‹ã ã¡ã‚„å®¶æ—ã€ä¸–ç•Œä¸ã®äººãŸã¡ã¨å…±æœ‰ã—ã¾ã—ã‚‡ã†ã€‚
$halfrack$
halfrack 2024/09/15
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hardware
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After four years of SMR storage, here's what we loveâ€”and what comes next
After four years of SMR storage, here's what we loveâ€”and what comes next In 2018, Dropbox became the first major tech company to adopt high-density SMR (shingled magnetic recording) techno logy for our storage drives. By 2019, our SMR fleet size was around 25%. Today, a staggering 90% of our total HDD fleet size is now SMR capable, and weâ€™ve continued to lead the industry in adoption with the deplo
$halfrack$
halfrack 2024/04/24
storage

hardware

hdd
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USB Type-Cã«ç½®ãæ›ãˆã‚‹æ–¹æ³• ç¬¬1è©± Type-Cã®åŽŸç†ã‚’çŸ¥ã‚‹
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$halfrack$
halfrack 2023/09/17
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hardware

usb-c

usb
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ä»Šã‚¢ãƒ„ã‚¤ð•ã¨ã„ãˆã°â€¦ ISA eð•tension! AVð•10ã¨APð•ã§å¤ã‚’ä¹—ã‚Šã“ãˆã‚ˆã† - Qiita
2023å¹´7æœˆã€Intel ã‹ã‚‰æ–°ãŸãªå‘½ä»¤æ‹¡å¼µã€APX(Advanced Performance Extension) ã¨ AVX10 ãŒç™ºè¡¨ã•ã‚ŒãŸã€‚ ã“ã‚Œã¾ã§ã®x86æ‹¡å¼µå‘½ä»¤ã¯SIMDå‘½ä»¤ã‚’ä¸å¿ƒã¨ã—ã¦ã€ä¸¦åˆ—æ€§ã®ã‚ã‚‹å‡¦ç†ã‚’åŠ¹çŽ‡ã‚ˆãæ‰±ã†ã‚‚ã®ãŒãƒ¡ã‚¤ãƒ³ã ã£ãŸã®ã«å¯¾ã—ã¦ã€APX ã§ã¯ã€ã‚¹ã‚«ãƒ©æ•´æ•°å‘½ä»¤ã€ã¤ã¾ã‚Šã€æ™®æ®µã‚ˆãä½¿ã†å‘½ä»¤ã« æ±Žç”¨ãƒ¬ã‚¸ã‚¹ã‚¿æ•°ãŒå€å¢— (16â†’32) 3 operand ã®æŽ¡ç”¨ ã¨ã„ã†å¤§ããªæ‹¡å¼µãŒå…¥ã£ã¦ã„ã‚‹ã€‚ã“ã‚Œã®è§£èª¬ã‚’æ›¸ã„ã¦ã„ãã€‚ APX REX2 prefixã¨ã„ã†prefixãŒå¢—ãˆã¦ã„ã‚‹(ã¾ãŸï¼prefixãŒå¢—ãˆãŸï¼) REX2 prefixã¯ã€0xD5ã«å‰²ã‚Šå½“ã¦ã‚‰ã‚Œã¦ã„ã‚‹ã€‚ 0xD5 ã¯ 32bit ã¾ã§ã¯ AAD ã¨ã„ã†å‘½ä»¤ã«å‰²ã‚Šå½“ã¦ã‚‰ã‚Œã¦ã„ãŸã€‚ x86ã‚’ä½¿ã£ã¦ã„ã‚‹äººãªã‚‰å½“ç„¶çŸ¥ã£ã¦ã„ã‚‹ã®ã§èª¬æ˜Žä¸è¦ã¨æ€ã†ãŒã€32bit ã¾ã§ã® x86 ã«ã¯ã€BCD ã‚’æ‰±ã†ãŸã‚ã®å°‚ç”¨å‘½ä»¤ãŒã„ã
$halfrack$
halfrack 2023/07/26
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cpu

hardware

intel
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DDR5ãƒ¡ãƒ¢ãƒªãƒ¢ã‚¸ãƒ¥ãƒ¼ãƒ«ã®å…¨å®¹ | MSI
DDR5 DRAMãƒ¢ã‚¸ãƒ¥ãƒ¼ãƒ«ã¯ã€éŽåŽ»æ•°ä¸–ä»£ã§è¤‡æ•°ã®ä¸»è¦ãªæ”¹å–„ãŒè¦‹ã‚‰ã‚Œã¾ã—ãŸã€‚ã‚ˆã‚Šé€Ÿããªã£ãŸã ã‘ã§ãªãã€ã‚³ãƒ³ãƒ”ãƒ¥ãƒ¼ãƒ†ã‚£ãƒ³ã‚°ã®æ–°ãŸãªæ™‚ä»£ã«å¯¾å¿œã™ã‚‹æ©Ÿèƒ½ã‚‚æè¼‰ã—ã¦ã„ã¾ã™ã€‚
$halfrack$
halfrack 2023/05/11
ODECC "ã™ã¹ã¦ã®DDR5 DRAMãƒ¢ã‚¸ãƒ¥ãƒ¼ãƒ«ã¯ã‚¨ãƒ©ãƒ¼ãƒ“ãƒƒãƒˆã‚’ãƒ¢ã‚¸ãƒ¥ãƒ¼ãƒ«å†…éƒ¨ã§è¨‚æ£ã§ãã¾ã™ã€‚"

hardware

dram

ecc
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$halfrack$
halfrack 2023/05/11
"On Die ECC"

hardware

dram

ecc
ãƒªãƒ³ã‚¯
(ä»®) ã“ã®Network OSé‡ŽéƒŽ!! ã‚¤ãƒ³ãƒ•ãƒ©é‡ŽéƒŽNight ãŠã‹ã‚ã‚Š
2017å¹´4æœˆ14æ—¥ "ã‚¤ãƒ³ãƒ•ãƒ©é‡ŽéƒŽNight ãŠã‹ã‚ã‚Š" ï¼ NHNãƒ†ã‚³ãƒ©ã‚¹ "(ä»®) ã“ã®Network OSé‡ŽéƒŽ!!" ã¨é¡Œã—ã¦ Ethernet Switch ã®ä»•çµ„ã¨ Network OS ã®ä½œã‚Šæ–¹ã‚’è§£èª¬ã€‚ Connpass Event Page: https://connpass.com/â€¦
$halfrack$
halfrack 2023/04/15
network

hardware
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Intel CPUã®é›»æº - Vengineerã®å¦„æƒ³
ã¯ã˜ã‚ã« ä»Šé€±ã®ã€ŒåŠå°Žä½“ãƒãƒƒãƒ—é›‘è«‡ã€ã§ã¯ã€GPUã®é›»æºã«ã¤ã„ã¦ãŠè©±ã—ã¾ã—ãŸã€‚ æ¥é€±æ—¥æ›œæ—¥ã®11:00-12:00ã«åŠå°Žä½“ãƒãƒƒãƒ—ã«é–¢ã™ã‚‹é›‘è«‡ã‚’ã‚„ã£ã¦ã„ã¾ã™ æ¥é€±æ—¥æ›œæ—¥(3/19) GPU Boardã®é›»æºå›žè·¯ ã«ã¤ã„ã¦ã§ã™ã€‚ Google Meetã®ä¼šè°ã‚³ãƒ¼ãƒ‰ã¯https://t.co/lisN6firt9 ã§ã™â€” Vengineerï¼ (@Vengineer) 2023å¹´3æœˆ12æ—¥ ä¸Šè¨˜ã®ãƒ„ã‚¤ãƒ¼ãƒˆã®ã‚¹ãƒ¬ãƒƒãƒ‰ã«è²¼ã£ãŸã€ä¸‹è¨˜ã®è¨˜äº‹ã‚’ãƒ™ãƒ¼ã‚¹ã«GPUã®é›»æºãŒã©ã†ãªã£ã¦ã„ã‚‹ã®ã‹ã‚’èª¬æ˜Žã—ã¾ã—ãŸã€‚ www.igorslab.de ã“ã®è¨˜äº‹ã®Page.3ã®ä¸‹å›³ãŒéžå¸¸ã«ã‚ã‹ã‚Šã‚„ã™ã„ã¨æ€ã„ã¾ã™ã€‚èª¬æ˜Žã®ãŸã‚ã«å¼•ç”¨ã—ã¾ã™ã€‚ Driver MOSFETãŒ3å€‹(Highå´ã«1å€‹ã€Lowå´ã«2å€‹)ã€Driver MOSFETã®Gateã«PWM Controllerã‹ã‚‰ã®Phaseä¿¡å·ãŒæ¥ã¾ã™ã€‚å…¥åŠ›ã®12Vã‚’ã“ã®Driv
$halfrack$
halfrack 2023/03/24
"Fully Integrated Voltage Regulators"

hardware

cpu

intel
ãƒªãƒ³ã‚¯
ipmitool Repository Archived, Developer Suspended By GitHub - Phoronix
ipm itool Repository Archived, Developer Suspended By GitHub Written by Michael Larabel in Free Software on 13 March 2023 at 11:30 AM EDT. 64 Comments The ipm itool utility on Linux systems is widely-used for controlling IPMI-enabled servers and other systems. This tool for interacting with the Intelligent Platform Management Interface (IPMI) is extremely common with server administrators while now
$halfrack$
halfrack 2023/03/14
ãƒžã‚¸ã§ï¼ï¼Ÿ

github

hardware

server
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AWS ãŒ EC2 I4i ã‚¤ãƒ³ã‚¹ã‚¿ãƒ³ã‚¹ã€EBSã€Amazon RDS å‘ã‘ã® Torn Write Prevention ã‚’ãƒªãƒªãƒ¼ã‚¹
Torn Write Prevention (TWP) ã¯æ›¸ãè¾¼ã¿ãƒˆãƒ©ãƒ³ã‚¶ã‚¯ã‚·ãƒ§ãƒ³ä¸ã«ã‚ªãƒšãƒ¬ãƒ¼ãƒ†ã‚£ãƒ³ã‚°ã‚·ã‚¹ãƒ†ãƒ ã®ã‚¯ãƒ©ãƒƒã‚·ãƒ¥ã‚„åœé›»ãŒç™ºç”Ÿã—ãŸå ´åˆã«ã€16 KiB ã®æ›¸ãè¾¼ã¿æ“ä½œãŒä¸æ–ã•ã‚Œãªã„ã‚ˆã†ã«ã™ã‚‹æ©Ÿèƒ½ã§ã™ã€‚ã“ã®æ©Ÿèƒ½ã‚’åˆ©ç”¨ã§ãã‚‹ã®ã¯ã€AWS Nitro SSD ãƒ™ãƒ¼ã‚¹ã® EC2 I4i ã‚¹ãƒˆãƒ¬ãƒ¼ã‚¸æœ€é©åŒ–ã‚¤ãƒ³ã‚¹ã‚¿ãƒ³ã‚¹ã€ãƒ–ãƒãƒƒã‚¯ã‚¹ãƒˆãƒ¬ãƒ¼ã‚¸ã‚µãƒ¼ãƒ“ã‚¹ã§ã‚ã‚‹ Amazon Elastic Block Store (EBS) (ã™ã¹ã¦ã® EC2 Nitro ãƒ™ãƒ¼ã‚¹ã®ã‚¤ãƒ³ã‚¹ã‚¿ãƒ³ã‚¹ã«ã‚¢ã‚¿ãƒƒãƒã•ã‚Œã¦ã„ã‚‹å ´åˆ)ã€ãƒ•ãƒ«ãƒžãƒãƒ¼ã‚¸ãƒ‰åž‹ã®ã‚ªãƒ¼ãƒ—ãƒ³ã‚½ãƒ¼ã‚¹ã‚¯ãƒ©ã‚¦ãƒ‰ãƒ‡ãƒ¼ã‚¿ãƒ™ãƒ¼ã‚¹ã§ã‚ã‚‹ Amazon Relational Database Services (RDS) ã§ã‚¤ãƒ³ã‚¹ã‚¿ãƒ³ã‚¹ã‚¹ãƒˆã‚¢ã‚’ä½¿ç”¨ã—ã¦ã„ã‚‹ AWS ã®ãŠå®¢æ§˜ã§ã™ã€‚ TWP ã‚’ä½¿ç”¨ã™ã‚‹ã¨ã€EC2ã€EBSã€ãƒžãƒãƒ¼ã‚¸ãƒ‰ã‚µãƒ¼ãƒ“ã‚¹ (Amazon RDS ãªã©) ä¸Šã§ M
$halfrack$
halfrack 2022/12/06
4KiBï½ž16KiB ã®å˜ä½ã§ã‚¢ãƒˆãƒŸãƒƒã‚¯ãªæ›¸ãè¾¼ã¿ãŒã§ãã‚‹ã‚ˆã†ã«ãªã‚‹ã‚‰ã—ã„ / ãƒªãƒ³ã‚¯å…ˆã®ãƒ‰ã‚ãƒ¥ãƒ¡ãƒ³ãƒˆã« NVMe ãƒ‡ãƒã‚¤ã‚¹ã®è¨å®šã‚’å«ã‚€è©³ç´°ãªãƒ‰ã‚ãƒ¥ãƒ¡ãƒ³ãƒˆãŒã‚ã‚‹

server

hardware

storage

ssd

aws
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Development [LWN.net]
$halfrack$
halfrack 2022/11/28
Linux ã® /dev/random ã®å®Ÿè£…ã«ã¤ã„ã¦ã€‚çœŸã®ä¹±æ•°ãŒ cryptographically secure ã‚’æº€ãŸã•ãªã„ã“ã¨ã®æ˜“ã—ã„è§£èª¬ã¨ã—ã¦ã‚‚è‰¯ã„ã€‚

security

hardware

linux

crypto
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I/O is no longer the bottleneck
November 2022 When interviewing programmers, I often ask them to code a simple program to count word frequencies in a text file. Itâ€™s a good probl em that tests a bunch of skills, and with some follow-up questions, allows you to go surprisingly deep. One of the follow-up questions I ask is, â€œWhatâ€™s the performance bottleneck in your program?â€ Most people say something like â€œreading from the input f
$halfrack$
halfrack 2022/11/28
SSD ã§é€Ÿããªã£ãŸãªã

performance

benchmark

hardware

server

storage
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$halfrack$
halfrack 2022/07/22
RDRAM ãŒæ°´æº–ã‚’å¼•ãä¸Šã’ãŸã€ãªã‚‹ã»ã©ãã‡ã€‚

hardware
ãƒªãƒ³ã‚¯
https://twitter.com/_msw_/status/1201711880554741762
$halfrack$
halfrack 2022/06/12
aws

nitro

hardware

server
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