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What Is an Institutional Subscription?
A Numerical Recipes institutional subscription provides unlimited
on-line access to both
Numerical Recipes
Electronic (the Numerical Recipes book in electronic format)
and Numerical Recipes Code (the
machine readable code)
for a block of computers within a subscriber's company or organization.
An institutional subscription is generally the most cost-effective way to make Numerical Recipes available to work groups, businesses, and educational institutions. Individuals, and groups of less than about 10, should consider individual subscriptions.
What License Terms Apply to Subscribers' Code Use?
Unlimited use of the code — e.g., for the user to include in his/her own programs
— is licensed on computers in the subscribing block of computers.
See complete license terms for the Numerical Recipes Institutional Subscriber License here and more information on Numerical Recipes licenses generally here.
How Is a Block of Subscribing Computers Specified?
By contiguous fixed IP address range. Work groups or small organizations may purchase
institutional subscriptions for any contiguous block of 256 IP addresses (for example,
a class C subnet).
Larger institutions may purchase subscriptions for multiple blocks of 256, up to
a full Class B network of 65536 addresses. Affordable enterprise-wide subscriptions are encouraged by a highly nonlinear subscription rate structure: The subscription cost for a full Class B network is only 5 times the cost of a single Class C subnet.
What About Proxies and NATs?
Subscribers warrant that they will not use network address translation or
other proxy mechanisms to enable a larger number of computers than their
subscription level. Subscribers should purchase a block of subscription addresses no
smaller than the actual number of enabled computers. If other arrangements
are needed as regards NATs or proxies, contact us (see below).
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Where Are the Files?
If you are already an institutional subscriber, the portal is
here. (You might want to bookmark
the portal after you go there the first time.)
How Much Does a Subscription Cost?
Please refer to the following charts:
How Do I Sign Up?
Fax a signed institutional purchase order (or institutional credit card information
and signed authorization to charge the transaction on institutional letterhead)
to us at (781) 863-1739.
Be sure to include (1) your name, telephone and email contact information; (2) the
desired number of IP addresses and subscription term in years; and (3) the exact
IP address range to be enabled. An example of an IP address range is:
"204.193.228.0 to 204.193.228.255 (256 addresses)".
Please send any questions regarding institutional subscriptions to us through our web contact page. Do not send credit card information by email.
What About Fewer Than 256 Users?
That is the usual situation, and our pricing takes
it into account. We license full subnets so that you don't
have to track individual users or machines. Compared to licensing
your users individually,
the break-even point for a Class C institutional subscription is roughly 7 users (book subscriptions plus code licenses), or 16 users (book subscriptions only).
For a Class B subscription, the corresponding break-even points are roughly 35 (book plus code) users, or 80 (book only) users. If you have fewer users than these numbers, then
you are better off with individual
subscriptions and code licenses.
Are There Other Kinds of Site Licenses?
No. Institutional subscriptions reflect our new, simplified business model.
We no longer offer paid-up site licenses of indefinite term. (Naturally,
paid-up site licenses for previous versions of
Numerical Recipes continue to be valid for those products.)
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Numerical Recipes Institutional Subscriptions