beowulf

[Fotis Georgatos]

"I.Ioannou" wrote:
> 
> Epanerxomai se ena thema pou eixame ksanasizitisei paliotera , to beowulf
> Epeidi yparxoun diathesima kapoia palia 386/486, an ypothesoume oti stinw ena
> cluster me ayta, ti software mporw na treksw ? Mono opoio exei sxediastei gia
> kati tetoio (px pov-ray) ? An thelw na ekmetaleytw thn ypologistikh isxy toy
> cluster gia mia px RDBMS pws (an) ginetai ?

RDBMS se clustet?
Pikra. 
Kamia RDBMS apo aytes pou kykloforoun den kanei gia ayth thn douleia,
giati einai entelws monolithikes efarmoges.
Akomh xeirotera, estw oti kanoun ta queries me child processes, kai pali
prepei na prospelasoun to idio block diskou, ara bottleneck sto diktyo.

Ean omws, h efarmogh sou einai sygkekrimenh, px kaneis 2-3 sygkekrimena 
pragmata sthn DB, tha mporouses na to organwseis esy to skhniko,
antigrafwntas thn bash pantou (ypothetontas oti kaneis psaksimata poly 
pio syxna apo oti eggrafes, pragma mallon apithano...)

> Kai kati poy den exw dieykrinisei, oso afora to cluster, xreiazetai kapoious
> extra drivers (pera apo to olo sistima gia bootp klp) pou yparxoun free, 'h
> commercial ?

Free.
To Suse exei ena software set "beowulf" me ola pou xrieazesai, AFAIK.

Pantws, ta nea mhxanakia Pentium-2,3,4... klp einai toso isxyra, 
poy dyskola pianontai apo ena cluster me ftwxa 386,486.

Ase pou mnhmh pia einai poly fthini.
Bale mnhmh, bale mnhmh, bale mnhmh, bale mnhmh, bale mnhmh.
To apotelesma tha einai na kaneis caching oti sou xreiazetai,
giati to Linux kanei xrhsh olhs ths diathesimhs RAM, opws mporei.

Twra koita, enas exeis mia bash Terrabytes - Pettabytes, allazei...
tespa, arketa

--
"Optimists think this is the best world we could live in,
pessimists are afraid that optimists are right"

fotis
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