(j3.2006) (SC22WG5.5045) Report to SC22 Plenary
Tue Jul 30 04:46:52 EDT 2013
Here is my report to this year's plenary of SC22.
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ISO/IEC JTC1/SC22/WG5 N1980
WG5 Business Plan and Convener's Report for ISO/IEC JTC1/SC22 2013 Plenary
PERIOD COVERED BY THIS REPORT: 1 July 2012 to 1 July 2013
SUBMITTED BY: John Reid
1.0 MANAGEMENT SUMMARY
1.1 JTC1/SC22/WG5 STATEMENT OF SCOPE
The development and maintenance of ISO/IEC Fortran programming language
1.2 PROJECT REPORT
1.2.1 COMPLETED PROJECTS
22.29113 Technical Specification on Further Interoperability of Fortran with C
The ballot for the DTS on Further Interoperability of Fortran with C was
concluded on 26 August 2012. The result was 10/1/18 (Approval as presented /
Approval with comments / Abstentions). There were two comments from Germany,
which were considered by WG5 and led to small revisions for the final version,
which was published on 1 December 2012.
1.2.2 PROJECTS UNDERWAY
22.02.01.01 Programming Language Fortran - Part 1: Base language
WG5 has decided that the next revision of the base language will be limited to
the incorporation of corrigenda, editorial improvements, and the Technical
Specifications, plus the removal of simple deficiencies in, and discrepancies
between, existing facilities. Work has begun on the construction of the list
of deficiencies and discrepancies and will continue during the coming year.
The primary responsibility for maintenance of the base language has been
delegated to INCITS/PL22.3. Corrigendum 2 to Fortran 2008 was completed during
this period and published as ISO/IEC 1539-1:2010/Cor.2:2013(E) dated 2013-06-01.
About 25 'interpretations' are under consideration, many of which have tentative
conclusions that are expected soon to be ratified by WG5. It is expected that
the third corrigendum to Fortran 2008 will be submitted later this year.
22.02.02 Programming Language Fortran - Part 2: Varying Length Character
WG5 continues to have responsibility for maintenance of this part of the
Fortran standard; there has been no maintenance activity during the period.
22.18508 Type 2 Technical Specification on Additional Parallel Features in
A New Work Item on a Technical Specification on Additional Parallel
Features in Fortran was approved on 5 December 2012. The TS will provide
support for features that were deferred during the development of Fortran
2008 because of insufficient time to reach consensus on their details. A
working draft has been constructed and it is hoped that a PDTS will be
available for balloting soon after the meeting of INCITS/PL22.3 in October
1.2.3 CANCELLED PROJECTS
1.2.4 CO-OPERATION AND COMPETITION
WG5 cooperates closely with the ANSI INCITS/PL22.3 Fortran Technical
Committee, to whom it has delegated the technical development of Fortran as
well as the maintenance of Fortran 2008. There is also contact and or
liaison with several organisations including
OpenMP Architecture Review Board
IEEE 754 - Floating point hardware
IFIP WG2.5 - Numerical Software
ANSI PL22.11 - C
ANSI PL22.16 - C++
with several of the PL22.3 and WG5 members and vendors also being members of
the other organisations. Many of those responsible for the development of
commercial Fortran compilers are members of PL22.3 and/or WG5.
Dan Nagle (PL22.3 chairman) has been actively involved with WG23
(Programming Language Vulnerabilities). A draft Fortran annex has been
constructed, see ISO/IEC JTC1/SC22/WG5/N1965, and has been forwarded to
WG23. Subject to editorial corrections, it will be included in the next
release of the WG23 TS.
There are no competitive activities.
2.0 PERIOD REVIEW
2.1 MARKET REQUIREMENTS
Fortran is the language of choice for much scientific, engineering, and
economic programming, particularly for very large programs that have evolved
over many years. There has been some delay over the implementation of Fortran
2003, but Cray and IBM now have full implementations and several other vendors
have implemented most of the features. Some features of Fortran 2008, notably
coarrays, are being implemented, and Cray has a full Fortran 2008
Most major Fortran compiler vendors are represented either on WG5 or its
Primary Development Body, INCITS/PL22.3, as are three of the major research
establishments that rely on Fortran for their scientific computing. In
addition to vendor-supplied and specific mailing lists, there is an active
email list and an active usenet newsgroup for users of Fortran, which
provide valuable feedback from users. All these diverse sources are being
used to guide the development of the language, both through revisions to the
base language Standard, and through other related standards and technical
The main achievement during the period has been the publlication
of the TS or Further Interoperability of Fortran with C (see section 1.2.1).
As elsewhere in the Standardization world, it is becoming increasingly
difficult to persuade employers to provide the necessary funding for
Standards activity. Most of the technical work involved in developing
Standards and Technical Reports is performed by INCITS/PL22.3 under the
strategic direction of WG5. All WG5 meetings since 2002 have been joint
meetings with INCITS/PL22.3 in order to optimize its use of human resources.
WG5 itself carries out much of its discussions via email, with an annual
meeting, usually during the summer, and occasional other meetings at
critical stages in the development of the base language standard.
3.0 FOCUS FOR NEXT WORK PERIOD
It is hoped that the PDTS on Additional Parallel Features in Fortran will be
constructed by November 2013.
It is intended that Corrigendum 3 will be forwarded by December 2013.
WG5 operates under a strategic plan described in WG5 Standing Document 4,
the latest version of which is ISO/IEC JTC1/SC22/WG5/N1349. In particular,
projects for which WG5 is responsible may be handled by other Development
Bodies, notably ANSI INCITS/PL22.3. Detailed plans for the next three years
are contained in ISO/IEC JTC1/SC22/WG5/N1979.
As far as possible, WG5 tries to anticipate technical comments during
international ballots by holding informal ballots of its members before any
documents are submitted for ballot. Nevertheless, unexpected technical
comments can always delay the planned schedule.
WG5 has made extensive use of email for over a decade to speed up technical
development. Since 1995 most documents have been distributed via an official
file server in the UK; all documents have been distributed in this way since
1997. An open web site is also used to provide non-technical, and other
publicly available, information to interested parties.
In addition to speeding up the distribution of documents, the use of
electronic distribution and communication systems also provides many other
benefits, such as the ability to rapidly carry out informal ballots of the
members for various reasons.
3.5 WORK PROGRAM PRIORITIES
WG5's priority activities this year are the maintenance of the base Fortran
language Standard, ISO/IEC 1539-1:2010, and the development of a TS on
Additional Parallel Features in Fortran.
4. OTHER ITEMS
4.1 POSSIBLE ACTION REQUESTS AT FORTHCOMING PLENARY
4.2 PROJECT EDITORS
ISO/IEC 1539-1: Malcolm Cohen, UK
ISO/IEC 1539-2: John Reid, UK
TS on Further Interoperability of Fortran with C: Bill Long, USA
TS on Additional Parallel Features in Fortran: Bill Long, USA
4.3 ELECTRONIC DOCUMENT DISTRIBUTION
4.4 RECENT MEETINGS
2011/06/27-07/1 Garching, Germany
2012/06/25-29 Markham, Ontario, Canada
2013/06/24-28 Delft, Netherlands
4.5 FUTURE MEETINGS
2014/06/23-27 Las Vegas, USA
2015/08 London, UK
2016/06 Boulder, Co, USA
Note that WG5 normally meets annually, with extra meetings being held
as/when necessary to process ballot comments or other high priority
activities that do not accord with the regular meeting schedule.
WG5's Primary Development Body, INCITS/PL22.3, meets three times each
year. Other work is carried out via email.
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