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Soliton Associates Ltd. is pleased to announce the future availability of SHARP APL for Linux. SHARP APL for AIX and Solaris have been used by Soliton’s corporate customers since 1994. SHARP APL for Linux is the result of a POSIX port of the AIX/Solaris products. SHARP APL for Linux will be available in October 1999 as a beta release and a production version is planned for the first quarter of 2000.
Personal licences for SHARP APL for Linux will be available free of charge.
Linux extends the SHARP APL product line that includes OS/390, AIX and Solaris. Linux can run on personal computers and workstations. The initial investment for setting up Linux is rather small and SHARP APL for Linux is an excellent product for prototyping and market development. With the Linux platform, SHARP APL offers scalability and a growth path for customer applications.
Linux is extremely reliable and efficient. Soliton considers Linux as ‘industrial strength’ and well suited for SHARP APL. Linux growth will benefit our customers.
Commercial licences for SHARP APL for Linux offer different levels of support and regular upgrades. Personal licences do not have support, but problem reports will be accepted.
In our effort to promote APL, SHARP APL for Linux can be used, at no cost, for personal use. The free version of the product is complete. The product will be FTP-able from any Linux distribution site and from Soliton’s home page (www.soliton.com/linux). There is no required registration process for the personal version. The documentation in PDF format is also free. We may consider selling a CD or a printed manual in the future.
We wish to promote APL among college and university students. By having a Linux version, we wish to encourage resellers and consultants to include SHARP APL in their solutions.
SHARP APL for Linux is a true multi-user system. Linux, like Unix, offers its users private disk areas and security. Consequently, SHARP APL for Linux offers private workspaces and files.
Because it runs in a server environment (Linux), you can have several users logged in at the same time running different applications unaware of each other. These users could be on different Linux machines or running W/98 with an X-Server, a JVM (Java VM), Telnet or a browser. As long as you are TCP connected to Linux and have a user-id, you can run APL.
The same multi-user architecture enables an application writer or user to have several APL sessions running concurrently with excellent performance. These sessions are called tasks. A shared variable processor enables tasks to share data with each other, either within the same user-id or system-wide. The shared variable processor is also the mechanism used to contact APs (auxiliary processors).
The workspace size is limited to 2GB but Linux will restrict this limit further depending on its swapping area and memory. Intel Linux kernel 2.0.36 and above is the only supported platform.
SHARP APL for Linux comes with:
Additionally, a set of utilities will be available (not included in the beta package):
The Graphical User Interface for application development is based on Java and the “SJI”. This approach is consistent with the server architecture of SHARP APL for Linux where the interface to an application is separated from the application server. This enables the ‘client’ to an application to be separated by a network, possibly the Internet and the choice of Java offers portability across many platforms including Windows (95, 98, NT, 2000), Mac-OS and most Unix implementations.
In particular, an Intranet connected machine with a Java VM (Netscape or IE4 for example) will be able to run GUI applications on Linux removing the need to have a second desktop. They can share a Linux machine with other users and have the same functionality as if they physically had it on their desks.
The SJI simplifies and provides the Java front-end capability for the application developers. Many will choose to call Java from APL via the SJI. However, it is also possible for a Java program to ‘call’ APL by using the SSM API for Java.
The SHARP APL language is based upon Ken Iverson’s APL dictionary. It has enclosed and heterogeneous arrays. Functionally, it is equal to APL2 but the syntax differs slightly. It is not difficult to program SHARP APL when you know APL2. Events and error trapping are similar to Dyalog APL. APL objects can be packed together into packages that can be stored on file and manipulated. Most large applications page-in code from files that have packages of functions and variables. A rank operator and the notion of rank in all the APL primitives enable elegant programming. A file system is incorporated in the language.
A session manager coupled with a full screen function editor simplifies the interactions with APL during application development. This offers portability and capability to develop APL remotely, separated from the server. An X-server on a Windows platform can be used with the same benefit as using a Linux desktop.
We are currently developing an IDE within the SJI framework. An experimental version should be available by year-end.
The personal version of SHARP APL for Linux does not have any support. However, problem reports can be submitted to sax@soliton.com. We plan to offer comprehensive support plans to our corporate customers. Please contact Soliton for further details.
Please refer to http://www.soliton.com/linux for up to date information. For commercial licenses, please contact Laurie Howard (ljh@soliton.com) at +31 20 646 4475 (Europe) or Nancy Lamb (nancy@soliton.com) at (716) 256-6466 (North America).
At APL99, Dyadic announced that it was developing a high-level interface to ActiveX Data Objects (ADO). This new Microsoft technology promises rapid access to data of all sorts including data in relational databases. ADO is a successor to Microsoft’s ODBC technology and works with existing ODBC drivers. This means that it can be used in place of SQAPL. During APL99, Dyadic ran two ADO workshops demonstrating the use of the interface.
Dyadic has recently announced the availability of the LAPACK and FFTW dynamic link libraries which have been customised for the Dyalog APL ŒNA interface.
LAPACK is a subroutine library for solving the most commonly occurring problems in numerical linear algebra. It is public-domain software, and can be used freely.
FFTW (Fast Fourier Transform for Windows) is free software, released under the GNU General Public License (GPL). To complement these DLLs, Dyadic supplies a MATH workspace that provides a high-level interface to the underlying C functions which are generally acknowledged to be among the fastest available for Windows.
Other recent enhancements, provided to DSS (Dyadic Support Service) subscribers, include a number of improvements to the Grid object and additional features for the Tracer (debugger).
Dyadic is nearing completion of Dyalog APL Version 8.2 for UNIX (APL/M) on Sun Solaris and IBM AIX and expects to announce a Linux implementation in early 2000. Version 8.2 for UNIX and Linux is almost completely compatible with Version 8.2 for the PC and workspaces developed on a PC may simply be loaded and run under UNIX.
New product releases now available ...
We are delighted to welcome Jonathan Manktelow to Causeway; he has worked with the Causeway software for nearly 2 years, as well as being a highly professional Delphi and C++ developer. One of his first jobs will be to implement a good working subset of RainPro on Sharp APL for Linux; this will be available on the same terms as the interpreter.