About: CAST-32A

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CAST-32A, Multi-core Processors is a position paper, by the Certification Authorities Software Team (CAST). It is not official guidance, but is considered informational by certification authorities such as the FAA and EASA. A key point is that Multi-core processor "interference can affect execution timing behavior, including worst case execution time (WCET)."

Attributes	Values
rdfs:label	CAST-32A (en)
rdfs:comment	CAST-32A, Multi-core Processors is a position paper, by the Certification Authorities Software Team (CAST). It is not official guidance, but is considered informational by certification authorities such as the FAA and EASA. A key point is that Multi-core processor "interference can affect execution timing behavior, including worst case execution time (WCET)." (en)
foaf:homepage	https://www.faa.gov/aircraft/air_cert/design_approvals/air_software/cast/cast_papers/media/cast-32a.pdf
dcterms:subject	Avionics Computer standards RTCA standards Software requirements Safety engineering
Wikipage page ID	63329110 (xsd:integer)
Wikipage revision ID	1086152739 (xsd:integer)
Link from a Wikipage to another Wikipage	DO-178C European Aviation Safety Agency Federal Aviation Administration Multi-core processor Avionics Computer standards RTCA standards Software requirements Safety engineering Advisory circular Certification Authorities Software Team
Link from a Wikipage to an external page	https://www.faa.gov/aircraft/air_cert/design_approvals/air_software/cast/cast_papers/media/cast-32a.pdf
sameAs	CAST-32A CAST-32A
dbp:wikiPageUsesTemplate	dbt:Infobox_computing_standard dbt:Reflist dbt:Start_date dbt:Technical dbt:Use_dmy_dates
abbreviation	CAST-32A (en)
domain	Aviation (en)
organization	Federal Aviation Administration
title	Multi-core Processors (en)
version	A (en)
website	https://www.faa.gov/aircraft/air_cert/design_approvals/air_software/cast/cast_papers/media/cast-32a.pdf
year started	2014 (xsd:integer)
has abstract	CAST-32A, Multi-core Processors is a position paper, by the Certification Authorities Software Team (CAST). It is not official guidance, but is considered informational by certification authorities such as the FAA and EASA. A key point is that Multi-core processor "interference can affect execution timing behavior, including worst case execution time (WCET)." The original document was published in 2014 by an "international group of certification and regulatory authority representatives." The current revision A was released in 2016. "The Federal Aviation Administration (FAA) and European Aviation Safety Agency (EASA) worked with industry to quantify a set of requirements and guidance that should be met to certify and use multi-core processors in civil aviation, described e.g. in the FAA CAST-32A Position Paper and the EASA Use of MULticore proCessORs in airborne Systems (MULCORS) research report." For applicants certifying under EASA, AMC 20-193 has now superseded CAST-32A since it AMC20-193 release on 21 January 2022. It is expected that the FAA will release its Advisory Circular AC 20-193 guidance in 2022, which is expected to be almost identical to AMC 20-193. One of the first mixed-criticality multicore avionics systems is expected to be certified sometime in 2020. The objectives of the standard are applicable to software on multicore processors, including the operating system. However, the nature of the underlying processor hardware must examined in detail to identify potential interference channels due to inter-core contention for shared resources. Verification that multicore interference channels have been mitigated can be accomplished through the use of interference generators, i.e., software tuned to create a heavy usage pattern on a shared resource. By creating stress on the shared resource, the impact of contention between cores can be measured and quantified. (en)
prov:wasDerivedFrom	wikipedia-en:CAST-32A?oldid=1086152739&ns=0
page length (characters) of wiki page	8031 (xsd:nonNegativeInteger)
foaf:isPrimaryTopicOf	wikipedia-en:CAST-32A
is Link from a Wikipage to another Wikipage of	Integrated modular avionics ARINC 653 Certification Authorities Software Team
is foaf:primaryTopic of	wikipedia-en:CAST-32A

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